- Merge to MariaDB 5.2

- Added --disable_query_log ; begin ; .... commit; --enable_query_log around all while loops that does insert

Post-review changes:
* modify mysqlbinlog's --help message for --rewrite-db option.
* add test for mysqlbinlog with --read-from-remote-server option.

- Added checking of return value for system(), freopen(), fgets() and chown()
- Ensure that calls that require a format strings gets a format string
- Other trivial things
Updated test suite results (especially for pbxt and embedded server)
Removed warning for "Invalid (old?) table or database name 'mysqld.1'" from pbxt tests
Speed up some pbxt tests by inserting begin ; commit; around "while loops with inserts"
Added mysqld startup option '--debug-flush'
Create maria_recovery.trace in data directory instead of current directory

client/mysql.cc:
  Check return value from system()
client/mysql_upgrade.c:
  Check return value from fgets()
client/mysqladmin.cc:
  Check return value from fgets()
client/mysqlslap.c:
  Check return value from system() (but ignore it, as it's not critical)
extra/yassl/src/crypto_wrapper.cpp:
  Check return value from fgets() (but ignore it, as it's internal file)
extra/yassl/taocrypt/src/aes.cpp:
  Added extra {} to remove compiler warning
extra/yassl/taocrypt/src/blowfish.cpp:
  Added extra {} to remove compiler warning
extra/yassl/taocrypt/src/misc.cpp:
  Ifdef not used code
include/mysys_err.h:
  Added error message for failing chown()
mysql-test/mysql-test-run.pl:
  Don't give warning for skipping ndbcluster (never enabled in MariaDB)
mysql-test/suite/funcs_1/r/is_columns_is_embedded.result:
  Update with new information schema information
mysql-test/suite/funcs_1/r/is_tables_is_embedded.result:
  New test
mysql-test/suite/funcs_1/r/is_tables_myisam_embedded.result:
  Update test results (has not been tested for a long time)
mysql-test/suite/funcs_1/r/is_tables_mysql_embedded.result:
  Update test results (has not been tested for a long time)
mysql-test/suite/funcs_1/t/is_tables_is.test:
  Don't run with embedded server (as results differ)
  I added a new test for embedded server
mysql-test/suite/funcs_1/t/is_tables_is_embedded.test:
  New test
mysql-test/suite/pbxt/my.cnf:
  Allow one to run pbxt tests without having to specify --mysqld=--default-storage-engine=pbxt
mysql-test/suite/pbxt/t/count_distinct3.test:
  Speed up test by inserting begin; ... commit;
mysql-test/suite/pbxt/t/subselect.test:
  Speed up test by inserting begin; ... commit;
mysys/errors.c:
  Added error message for failing chown()
mysys/my_copy.c:
  Added error message for failing chown()
mysys/my_redel.c:
  Added error message for failing chown()
mysys/safemalloc.c:
  Added cast to get rid of compiler warning
sql/ha_partition.cc:
  Fixed wrong argument to sql_print_error() (it requires a format string)
sql/log.cc:
  Test return value of freopen()
sql/mysqld.cc:
  Test return value of freopen()
  Added startup option '--debug-flush' to be used when one gets a core dump (easy to explain to people on IRC)
sql/rpl_rli.cc:
  Fixed wrong argument to sql_print_error() (it requires a format string)
sql/set_var.cc:
  Added {} to get rid of compiler warnings
sql/slave.cc:
  Fixed wrong argument to mi->report() and sql_print...() (they require a format string)
sql/sql_cache.cc:
  Fixed wrong argument to sql_printinformation() (it requires a format string)
sql/sql_parse.cc:
  Test return value of fgets()
sql/sql_plugin.cc:
  Fixed wrong argument to sql_print_error() (it requires a format string)
sql/sql_select.cc:
  Use unique table name for internal temp tables instead of full path
  (Simple speed & space optimization)
sql/udf_example.c:
  Removed compiler warning about not used variable
storage/maria/ha_maria.cc:
  Fixed wrong argument to sql_print_error() and ma_check_print_error() (they require a format string)
storage/maria/ma_recovery.c:
  Create maria_recovery.trace in data directory instead of current directory
storage/maria/unittest/ma_test_loghandler-t.c:
  Fixed wrong argument to ok();  Requires a format string
storage/pbxt/src/strutil_xt.cc:
  Detect temporary tables by checking if that path for the table is in the mysql data directory.
  The database for temporary tables is after this patch, from PBXT point of view, ""
  This is needed to stop PBXT from calling filename_to_tablename() with the base directory as an argument, which caused
  ERROR: Invalid (old?) table or database name 'mysqld.1'" in the log when running the test suite.
tests/mysql_client_test.c:
  Fixed compiler warnings
unittest/mysys/base64-t.c:
  Fixed wrong argument to diag() (it requires a format string)
  Added a comment that the current 'print' of differing buffers doesn't print the right thing,
  but didn't fix this as it's not important (unless we find a bug in the real code)

- Apply Alexander Ivanov's fix to testsuite

- Review fixes

client/Makefile.am:
  - Make it build on Linux
client/mysqlbinlog.cc:
  - Coding style fixes
  - Better/more comments
  - Use client/sql_string.*, not server's sql/sql_string.*.
  - Don't declare a dummy TABLE_LIST structure in the client.
client/sql_string.h:
  - Use client/sql_string.*, not server's sql/sql_string.*.
sql/log_event.cc:
  = Fix coding style
  = Introduce Log_event::event_owns_temp_buf which tells whether Log_event::temp_buf is 'owned' by the Log_event object and should be my_free'd on return. 
  This is needed because rewrite_db() needs to dispose of the buffer, and 
  - when mysqlbinlog is reading directly from binlog file, the buffer 
    should be freed
  - when mysqlbinlog is reading from a server, the buffer is a part of network
    buffer and shouldn't be freed.
sql/log_event.h:
  Introduce Log_event::event_owns_temp_buf which tells whether Log_event::temp_buf is 'owned' by the Log_event object and should be my_free'd on return. 
  This is needed because rewrite_db() needs to dispose of the buffer, and 
  - when mysqlbinlog is reading directly from binlog file, the buffer 
    should be freed
  - when mysqlbinlog is reading from a server, the buffer is a part of network
    buffer and shouldn't be freed.
sql/mysqld.cc:
  - Better/more comments
sql/rpl_filter.cc:
  - #ifdef-out Rpl_filter::tables_ok from the client. This allows not 
    to define dummy TABLE_LIST on the client
sql/rpl_filter.h:
  - #ifdef-out Rpl_filter::tables_ok from the client. This allows not 
    to define dummy TABLE_LIST on the client
sql/sql_string.cc:
  - Use client/sql_string.*, not server's sql/sql_string.*.
sql/sql_string.h:
  - Use client/sql_string.*, not server's sql/sql_string.*.

- mysql_install_db doesn't require --basedir option anymore
- Fix that mysql_install_db mysqld_safe mysql_fix_privilege_tables has right paths for tar binary install
- Move some files from share/mysql to where they have always been (1.0 - 5.0)
- Move scripts used when installing MariaDB to the scripts directory (Added symlinks in old place for compatibility)
- Move man files to 'man' (from 'share/man')
- Ensure that all scripts are executable

mysql_secure_installation.sh
- Added support for --basedir flag
- Don't assume that the mysql binary is in the path

Other:
- Fixed crash when one got kill signal during bootstrap

Docs/INSTALL-BINARY:
  Change references from MySQL to MariaDB
Docs/mysql.info:
  Change references from MySQL to MariaDB
README:
  Removed duplicate row
configure.in:
  Change references from MySQL to MariaDB
libmysql/libmysql.c:
  Assume that if version string contains '-maria-' we are also using MariaDB
scripts/make_binary_distribution.sh:
  Fix that mysql_install_db mysqld_safe mysql_fix_privilege_tables has right paths for tar binary install
  Remove some files that should not be part of a MariaDB binary install
  Move some files from share/mysql to where they have always been (1.0 - 5.0)
  Move man files to 'man' (from 'share/man')
  Move scripts used when installing MariaDB to the scripts directory (Added symlinks in old place for compatibility)
  Removed generation of 'netware/init_db.sql', as it was never used
  Remove old reference to bk tree
scripts/mysql_secure_installation.sh:
  Added support for --basedir flag
  Don't assume that the mysql binary is in the path
  Use .my.cnf files
  Removed a lot of useless 'echo' rows
sql/mysqld.cc:
  Fixed crash when one got kill signal during bootstrap
storage/maria/Makefile.am:
  Don't add internal test files to binary distributions
storage/myisam/Makefile.am:
  Don't add internal test files to binary distributions
support-files/Makefile.am:
  Make scripts executable
support-files/config.huge.ini.sh:
  Removed execution bit
support-files/config.medium.ini.sh:
  Removed execution bit
support-files/config.small.ini.sh:
  Removed execution bit
support-files/mysql.server.sh:
  Ensure this works also mysqld is in the 'bin' directory

 - configtest target in rc script.
 - type fix usefull -> useful.

- Changed tar file base name
- Added binaries needed by the Maria storage engine

The original code comes, as far as I know, from Google (Mark Callaghan's team) with additional work from Percona, Ourdelta and Weldon Whipple.

This code provides the same functionallity, but with a lot of changes to make it faster and better fit the MariaDB infrastucture.

Added new status variables:
- Com_show_client_statistics, Com_show_index_statistics, Com_show_table_statistics, Com_show_user_statistics
- Access_denied_errors, Busy_time (clock time), Binlog_bytes_written, Cpu_time, Empty_queries, Rows_sent, Rows_read

Added new variable / startup option 'userstat' to control if user statistics should be enabled or not

Added my_getcputime(); Returns cpu time used by this thread.
New FLUSH commands:
- FLUSH SLOW QUERY LOG
- FLUSH TABLE_STATISTICS
- FLUSH INDEX_STATISTICS
- FLUSH USER_STATISTICS
- FLUSH CLIENT_STATISTICS

New SHOW commands:
- SHOW CLIENT_STATISTICS
- SHOW USER_STATISTICS
- SHOW TABLE_STATISTICS
- SHOW INDEX_STATISTICS

New Information schemas:
- CLIENT_STATISTICS
- USER_STATISTICS
- INDEX_STATISTICS
- TABLE_STATISTICS

Added support for all new flush commands to mysqladmin

Added handler::ha_... wrappers for all handler read calls to do statistics counting
- Changed all code to use new ha_... calls
- Count number of read rows, changed rows and rows read trough an index

Added counting of number of bytes sent to binary log (status variable Binlog_bytes_written)
Added counting of access denied errors (status variable Access_denied_erors)

Bugs fixed:
- Fixed bug in add_to_status() and add_diff_to_status() where longlong variables where threated as long
- CLOCK_GETTIME was not propely working on Linuxm

client/mysqladmin.cc:
  Added support for all new flush commmands and some common combinations:
  
  flush-slow-log
  flush-table-statistics
  flush-index-statistics
  flush-user-statistics
  flush-client-statistics
  flush-all-status
  flush-all-statistics
configure.in:
  Added checking if clock_gettime needs the librt.
  (Fixes Bug #37639 clock_gettime is never used/enabled in Linux/Unix)
include/my_sys.h:
  Added my_getcputime()
include/mysql_com.h:
  Added LIST_PROCESS_HOST_LEN & new REFRESH target defines
mysql-test/r/information_schema.result:
  New information schema tables added
mysql-test/r/information_schema_all_engines.result:
  New information schema tables added
mysql-test/r/information_schema_db.result:
  New information schema tables added
mysql-test/r/log_slow.result:
  Added testing that flosh slow query logs is accepted
mysql-test/r/status_user.result:
  Basic testing of user, client, table and index statistics
mysql-test/t/log_slow.test:
  Added testing that flosh slow query logs is accepted
mysql-test/t/status_user-master.opt:
  Ensure that we get a fresh restart before running status_user.test
mysql-test/t/status_user.test:
  Basic testing of user, client, table and index statistics
mysys/my_getsystime.c:
  Added my_getcputime()
  Returns cpu time used by this thread.
sql/authors.h:
  Updated authors to have core and original MySQL developers first.
sql/event_data_objects.cc:
  Updated call to mysql_reset_thd_for_next_command()
sql/event_db_repository.cc:
  Changed to use new ha_... calls
sql/filesort.cc:
  Changed to use new ha_... calls
sql/ha_partition.cc:
  Changed to use new ha_... calls
  Fixed comment syntax
sql/handler.cc:
  Changed to use new ha_... calls
  Reset table statistics
  Added code to update global table and index status
  Added counting of rows changed
sql/handler.h:
  Added table and index statistics variables
  Added function reset_statistics()
  Added handler::ha_... wrappers for all handler read calls to do statistics counting
  Protected all normal read calls to ensure we use the new calls in the server.
  Made ha_partition a friend class so that partition code can call the old read functions
sql/item_subselect.cc:
  Changed to use new ha_... calls
sql/lex.h:
  Added keywords for new information schema tables and flush commands
sql/log.cc:
  Added flush_slow_log()
  Added counting of number of bytes sent to binary log
  Removed not needed test of thd (It's used before, so it's safe to use)
  Added THD object to MYSQL_BIN_LOG::write_cache() to simplify statistics counting
sql/log.h:
  Added new parameter to write_cache()
  Added flush_slow_log() functions.
sql/log_event.cc:
  Updated call to mysql_reset_thd_for_next_command()
  Changed to use new ha_... calls
sql/log_event_old.cc:
  Updated call to mysql_reset_thd_for_next_command()
  Changed to use new ha_... calls
sql/mysql_priv.h:
  Updated call to mysql_reset_thd_for_next_command()
  Added new statistics functions and variables needed by these.
sql/mysqld.cc:
  Added new statistics variables and structures to handle these
  Added new status variables:
  - Com_show_client_statistics, Com_show_index_statistics, Com_show_table_statistics, Com_show_user_statistics
  - Access_denied_errors, Busy_time (clock time), Binlog_bytes_written, Cpu_time, Empty_queries, Rows_set, Rows_read
  Added new option 'userstat' to control if user statistics should be enabled or not
sql/opt_range.cc:
  Changed to use new ha_... calls
sql/opt_range.h:
  Changed to use new ha_... calls
sql/opt_sum.cc:
  Changed to use new ha_... calls
sql/records.cc:
  Changed to use new ha_... calls
sql/set_var.cc:
  Added variable 'userstat'
sql/sp.cc:
  Changed to use new ha_... calls
sql/sql_acl.cc:
  Changed to use new ha_... calls
  Added counting of access_denied_errors
sql/sql_base.cc:
  Added call to statistics functions
sql/sql_class.cc:
  Added usage of org_status_var, to store status variables at start of command
  Added functions THD::update_stats(), THD::update_all_stats()
  Fixed bug in add_to_status() and add_diff_to_status() where longlong variables where threated as long
sql/sql_class.h:
  Added new status variables to status_var
  Moved variables that was not ulong in status_var last.
  Added variables to THD for storing temporary values during statistics counting
sql/sql_connect.cc:
  Variables and functions to calculate user and client statistics
  Added counting of access_denied_errors and lost_connections
sql/sql_cursor.cc:
  Changed to use new ha_... calls
sql/sql_handler.cc:
  Changed to use new ha_... calls
sql/sql_help.cc:
  Changed to use new ha_... calls
sql/sql_insert.cc:
  Changed to use new ha_... calls
sql/sql_lex.h:
  Added SQLCOM_SHOW_USER_STATS, SQLCOM_SHOW_TABLE_STATS, SQLCOM_SHOW_INDEX_STATS, SQLCOM_SHOW_CLIENT_STATS
sql/sql_parse.cc:
  Added handling of:
  - SHOW CLIENT_STATISTICS
  - SHOW USER_STATISTICS
  - SHOW TABLE_STATISTICS
  - SHOW INDEX_STATISTICS
  Added handling of new FLUSH commands:
  - FLUSH SLOW QUERY LOGS
  - FLUSH TABLE_STATISTICS
  - FLUSH INDEX_STATISTICS
  - FLUSH USER_STATISTICS
  - FLUSH CLIENT_STATISTICS
  Added THD parameter to mysql_reset_thd_for_next_command()
  Added initialization and calls to user statistics functions
  Added increment of statistics variables empty_queries, rows_sent and access_denied_errors.
  Added counting of cpu time per query
sql/sql_plugin.cc:
  Changed to use new ha_... calls
sql/sql_prepare.cc:
  Updated call to mysql_reset_thd_for_next_command()
sql/sql_select.cc:
  Changed to use new ha_... calls
  Indentation changes
sql/sql_servers.cc:
  Changed to use new ha_... calls
sql/sql_show.cc:
  Added counting of access denied errors
  Added function for new information schema tables:
  - CLIENT_STATISTICS
  - USER_STATISTICS
  - INDEX_STATISTICS
  - TABLE_STATISTICS
  Changed to use new ha_... calls
sql/sql_table.cc:
  Changed to use new ha_... calls
sql/sql_udf.cc:
  Changed to use new ha_... calls
sql/sql_update.cc:
  Changed to use new ha_... calls
sql/sql_yacc.yy:
  Add new show and flush commands
sql/structs.h:
  Add name_length to KEY to avoid some strlen
  Added cache_name to KEY for fast storage of keyvalue in cache
  Added structs USER_STATS, TABLE_STATS, INDEX_STATS
  Added function prototypes for statistics functions
sql/table.cc:
  Store db+table+index name into keyinfo->cache_name
sql/table.h:
  Added new information schema tables
sql/tztime.cc:
  Changed to use new ha_... calls

- Increase thread_stack_size on 64-bit platforms to 240K, so that 
  it can accomodate the HA_CHECK structure which is 130K.

Merge from trunk.

Add test-suite.

Add --rewrite-db option to mysqlbinlog.

Add Rpl_filter to mysqlbinlog.cc
Note. Though within MWL#36 we are going to use only two Rpl_filter's
      methods (add_db_rewrite and get_rewrite_db), we look forward for
      MWL#40 where Rpl_filter is likely to be used to its more extent.
Note. Within MWL#36 we will not use Rpl_filter for supporting --database
      option: this option allows to specify only one database what
      doesn't correlate with Rpl_filter::add_do_db() (using this method
      will either appear "artificial" or require changing --database
      semantics). To be discussed within MWL#40.
To add Rpl_filter we need:
1. include sql_string.h
   There are two instances of sql_string.* files - in sql and in client
   directories. We need to use the ones from the sql dir.
2. include sql_list.h
   This requires to define a client version of sql_alloc() function.
3. include rpl_filter.h
   This requires a definition of system_charset_info variable.
   Besides, Rpl_filter::tables_ok() refers to a TABLE_LIST structure which
   encounts deep non-client dependencies and can't be used here as is. On
   the other hand, tables_ok() make use only few TABLE_LIST's members and
   none of them depends on specific server context. This allows to redefine
   TABLE_LIST in a client context so that tables_ok() becomes admissible
   (surely it's a kind of hack but (at least currently) it's better than
   #ifndef'ing this method in Rpl_filter definition).
Also add Rpl_filter::rewrite_db_is_empty() method. This is needed to be
able to check that --rewrite-db is not used jointly with --base64-output=
always (this is not supported - at least currently).

Add rewrite_db() member to the Table_map_log_event class.
Each RBR-event in binary log is preceded by a Table_map event
containing a (db_id, db_name) pair. The rewrite_db(new_name)
function replaces db_name by new_name in a buffer containing
Table_map event read from the binary log.

Make sql_alloc() declaration "public" for a client context.
The reason is that sql_alloc() is used in definition of some common
purpose stuff (e.g. sql_list.*). To make this stuff available for a
client context we declare sql_alloc() as a "virtual function", i.e.
as a function that is already declared but must be defined in this
context (note that definition of sql_alloc() in thr_malloc.cc is
#ifndef'ed for MYSQL_CLIENT).
Also make sql_string.h repeatedly includable.

Bug #46917: mysqd-nt installs wrong
      
When parsing the service installation parameter in 
default_service_handling() make sure the value of the
optional parameter doesn't overwrite it's name.

This fixes a race condition in the test system

mysql-test/include/maria_empty_logs.inc:
  Added comment
mysql-test/include/wait_for_status_var.inc:
  Fixed type in variable name. Add ' around variables for better error message
mysql-test/mysql-test-run.pl:
  Remove -skip-falcon (not to be used), add skip-pbxt to bootstrap
mysql-test/suite/maria/t/maria_showlog_error-master.opt:
  Force restart before maria_showlog_error to get rid of status from previous connection

while waiting for output): attempt 2

while waiting for output)

Remove the run of the parts suite (as it is now included in default list of suite).
Add run of PBXT.