- in make_join_select(), use the correct condition to check whether the current table is a SJM nest (the previous 
  condition used to be correct before, but then sj-materialization temp table creation was moved to happen before
  make_join_select was called)

This bug is a consequence of the fix in the function add_ref_to_table_cond
for LP bug 826935 that turned out to be not quite correct: it tried to AND
the same generated condition with two different other conditions.
This patch creates a copy of the generated condition if the condition needs
to be ANDed with two different items.

Also, fix code to get physical memory size.

and disable feedback plugin by default, if it's compiled in.

Cleanup:  Changed procedure type from a int/char to an enum for easier to manage and debug code.

mysql-test/r/trigger.result:
  Test that mysql.proc is not used as part of creating or using a trigger.
mysql-test/t/trigger.test:
  Test that mysql.proc is not used as part of creating or using a trigger.
sql/sp.cc:
  The main bug fix is to not look up triggers in mysql.proc; This is done by ignoreing type == TYPE_ENUM_TRIGGER in sp_add_used_routine()
  Cleanup:  Changed procedure type from a int/char to an enum.
sql/sp.h:
  Cleanup:  Changed procedure type from a int/char to an enum.
sql/sp_head.h:
  Cleanup:  Changed procedure type from a int/char to an enum.
sql/sql_db.cc:
  Fix include order
sql/sql_lex.cc:
  Fix include order
sql/sql_parse.cc:
  Cleanup:  Changed procedure type from a int/char to an enum.
sql/sql_show.cc:
  Fix include order
sql/sql_view.cc:
  Fix include order

Added suppression message for valgrind failure found on OpenSuSE 11.1

mysql-test/mysql-test-run.pl:
  Fix for issue found in buildbot where mysqld.*.err files was missing
  Patch by Kristian Nielsen
mysql-test/valgrind.supp:
  Added suppression message for valgrind failure found on OpenSuSE 11.1
sql/mysqld.cc:
  Added missing space to comment

Now the aria_log_control_file and log file is not touched if aria files are not written to.

storage/maria/ma_checkpoint.c:
  Fixed wrong test if log file has increased.
  Don't reset pages_to_flush_before_next_checkpoint as this would cause the checkpoint to happen at next checkpoint interval

Analysis:
The cause of the bug was that the method
subselect_rowid_merge_engine::partial_match()
was not designed for re-execution within the
same query. Specifically, it didn't cleanup
the bitmap of matching keys after completion.

The test query requires double execution of
the IN predicate because it first checks the
predicate as a constant condition. The second
execution during regular execution used the bitmap
of matching keys produced by the first execution
instead of starting with a clean one.

Solution:
Cleanup the bitmap of matching keys at the end of
the partial matching procedure.

(correction for the previous patch).

bugfix: garbage in PLUGIN_VAR_STR variables when INSTALL'ing a plugin

mysql-test/include/default_mysqld.cnf:
  disable feedback plugin by default.
  when enabled - tag is as a test run

send "startup" message 5 minutes after startup, not immediately

Makefile.am:
  mariadb uses .la libraries for static plugins.
  mysql - .a libraries
plug.in:
  mariadb uses .la libraries for static plugins.
  mysql - .a libraries
sender_thread.cc:
  send "startup" message 5 minutes after startup, not immediately
url_http.cc:
  avoid "unused variable https" warning

CMakeLists.txt:
  1. add -DSAFEMALLOC -DSAFE_MUTEX in the top-level CMakeLists.txt
     don't force plugins to copy-paste these lines in their CMakeLists.txt
  2.1 search plugin/* for plugins (not only storage/*),
  2.2 recognize MYSQL_PLUGIN (not only MYSQL_STORAGE_ENGINE),
  2.3 extract library names from the plug.in (don't force library names to
      be ha_<engine>.dll and <engine>.lib)
include/mysql/plugin.h:
  define MYSQL_PLUGIN_EXPORT appropriately
  (backport from 5.5)
libmysqld/CMakeLists.txt:
  remove unnecessary workaround
plugin/fulltext/CMakeLists.txt:
  build fulltext example plugin on windows
storage/maria/CMakeLists.txt:
  The library is called libmaria_s.lib, not maria.lib
storage/maria/unittest/CMakeLists.txt:
  The library is called libmaria_s.lib, not maria.lib
storage/myisam/CMakeLists.txt:
  The library is called libmyisam_s.lib, not myisam.lib
storage/mysql_storage_engine.cmake:
  introduce MYSQL_PLUGIN macro.
  don't force library names to be ha_<engine>.dll and <engine>.lib
storage/xtradb/CMakeLists.txt:
  remove a condition from include
win/README:
  don't use deprecated syntax
win/configure-mariadb.sh:
  don't use deprecated syntax
win/configure.js:
  1. support MYSQL_PLUGIN in addition to MYSQL_STORAGE_ENGINE.
  2. support plugin/* in addition to storage/*

Changed a test case to make its result set platform independent.

- convert_subq_to_jtbm() should always restore the used arena.

Analysis:
The cause of the bug was the changed meaning of
subselect_partial_match_engine::has_covering_null_row.
Previously it meant that there is row with NULLs in
all nullable fields of the materialized subquery table.
Later it was changed to mean a row with NULLs in all
fields of this table.

At the same time there was a shortcut in
subselect_rowid_merge_engine::partial_match() that
detected a special case where:
- there is no match in any of the columns with NULLs, and
- there is no NULL-only row that covers all columns with
  NULLs.
With the change in the meaning of has_covering_null_row,
the condition that detected this special case was incomplete.
This resulted in an incorrect FALSE, when the result was a
partial match.

Solution:
Expand the condition that detected the special case with the
correct test for the existence of a row with NULL values in
all columns that contain NULLs (a kind of parially covering
NULL-row).

in the function best_access_path revealed another bug: currently 
table scans on NULL keys used for NOT IN subqueries cannot work 
together with employment of join caches for inner tables of these 
subqueries. Otherwise the result can be wrong as it could be seen 
with the result of the test case constructed for bug #37894 
in the file subselect3_jcl6.result.

of the 5.3 code line after a merge with 5.2 on 2010-10-28
in order not to allow the cost to access a joined table to be equal
to 0 ever.

Expanded data sets for many test cases to get the same execution plans
as before.