Replaced COND_refresh with COND_global_read_lock becasue of a bug in NTPL threads when using different mutexes as arguments to pthread_cond_wait()
The original code caused a hang in FLUSH TABLES WITH READ LOCK in some circumstances because pthread_cond_broadcast() was not delivered to other threads.
This fixes:
Bug#16986: Deadlock condition with MyISAM tables
Bug#20048: FLUSH TABLES WITH READ LOCK causes a deadlock

Remove dflt_field from field structure as this was only needed when createing temporary table and I found another soultion that doesn't increase the size of the field structure for all table instances. (Better fix for bug #19089)
Fixed compiler warnings
Fixed valgrind warning in Item_date_add_intervall::eq. (Recoding of bugfix #19490)

transfer NO_DEFAULT_VALUE_FLAG flag to new field

show view definition to users that have the needed privilleges

into  rurik.mysql.com:/home/igor/dev/mysql-5.0-0

into  poseidon.ndb.mysql.com:/home/tomas/mysql-5.0-main

into  mysql.com:/home/kgeorge/mysql/5.0/B18745

into  poseidon.ndb.mysql.com:/home/tomas/mysql-5.0-main

into  poseidon.ndb.mysql.com:/home/tomas/mysql-5.0-main

into  mysql.com:/home/stewart/Documents/MySQL/5.0/main

Moved the InnoDB related test from func_group.test to innodb_mysql.test

into mysql.com:/home/hf/work/mysql-5.0.mrg

into  rurik.mysql.com:/home/igor/dev/mysql-5.0-0

When a CREATE TABLE command created a table from a materialized
view id does not inherit default values from the underlying table.
Moreover the temporary table used for the view materialization
does not inherit those default values.
In the case when the underlying table contained ENUM fields it caused
misleading error messages. In other cases the created table contained
wrong default values.
The code was modified to ensure inheritance of default values for
materialized views.

into mysql.com:/Users/kent/mysql/bk/mysql-5.0-new

  Always compile position independent

into  mysql.com:/home/jimw/my/mysql-5.0-clean

into  devsrv-b.mysql.com:/users/msvensson/mysql-5.0

into  neptunus.(none):/home/msvensson/mysql/mysql-4.1

into  neptunus.(none):/home/msvensson/mysql/mysql-4.1

into  neptunus.(none):/home/msvensson/mysql/mysql-5.0

 - A segfault occured when the function 'kill_server' called 
   'my_sigset' with signal number 0. 'my_sigset' is a macro which
   uses 'sigaction' to install the signal handler with an invalid
   signal number will on most platforms return EINVAL but yields
   a segfauilt on IRIX 6.5
 - The server crash was detected by mysqld_safe and it was restarted although
   a shutdown was requested. 
 - Semantics of kill_server(0) is not known, leaving it intact

into  perch.ndb.mysql.com:/home/jonas/src/mysql-5.0

  Add mutex surronding sessions, as ndb_mgmd now actively tries to go and  "purge stale sessions"

into  rurik.mysql.com:/home/igor/mysql-5.0

into  rurik.mysql.com:/home/igor/dev/mysql-5.0-2

  The 'decimals' member of Item_func was being improperly initialized,
  which resulted in improper results when handling large numeric values.

into moonbone.local:/work/19077-bug-5.0-mysql

A further reduction in CPU usage by ndb_mgmd with failed data nodes.

into  rurik.mysql.com:/home/igor/dev/mysql-5.0-2

This bug was introduced when the patch resolving the
performance problem 17164 was applied. As a result
of that modification the not_null_tables attributes
were calculated incorrectly for constant OR conditions.
This triggered invalid conversion of outer joins into
inner joins.

The convert_constant_item() function converts constant items to ints on
prepare phase to optimize execution speed. In this case it tries to evaluate
subselect which contains a derived table and is contained in a derived table. 
All derived tables are filled only after all derived tables are prepared.
So evaluation of subselect with derived table at the prepare phase will
return a wrong result.

A new flag with_subselect is added to the Item class. It indicates that
expression which this item represents is a subselect or contains a subselect.
It is set to 0 by default. It is set to 1 in the Item_subselect constructor
for subselects.
For Item_func and Item_cond derived classes it is set after fixing any argument
in Item_func::fix_fields() and Item_cond::fix_fields accordingly.
The convert_constant_item() function now doesn't convert a constant item
if the with_subselect flag set in it. 

into mysql.com:/Users/kent/mysql/bk/mysql-5.0-new

Fixes bug#19040 "yaSSL does not compile on AIX".