Fixed 'not initialized' memory error.

into sinisa.nasamreza.org:/mnt/work/mysql

   handling (backport from 4.0 tree)

(Fixed problem with autoconf 2.53 on Solaris)

into mysql.com:/space/my/mysql-3.23-build

 - sql_analyse.cc: Fixed bug in decimal handling

into mysql.com:/space/my/mysql-3.23

Workaround for problem with autconf 2.53 on Solaris
(Fixes problem with SOCKET_SIZE_TYPE)

into sinisa.nasamreza.org:/mnt/work/mysql

into sinisa.nasamreza.org:/mnt/work/mysql-4.0

LIMIT clause when filesort had to be used.

In that case LIMIT was applied to filesort of one of the tables, 
although it could not be.

This fix solved problems with LEFT JOIN too...
 

into serg.mysql.com:/usr/home/serg/Abk/mysql-4.0

into mysql.com:/space/my/mysql-3.23

into mysql.com:/space/my/mysql-3.23

otherwise COM_CHANGE_USER is unprotected and can be used for both privilege escalation and buffer overrun

into sinisa.nasamreza.org:/mnt/work/mysql-4.0

  Fix a hang introduced in 4.0.5 in INSERT INTO ... SELECT ... when binlogging is not on

into sinisa.nasamreza.org:/mnt/work/mysql-4.0

Optimized SELECT DISTINCT ... ORDER BY ... LIMIT
Fixed reference to uninitalized variable

into sinisa.nasamreza.org:/mnt/work/mysql

into sinisa.nasamreza.org:/mnt/work/mysql-4.0

into mysql.com:/space/my/mysql-3.23

into sinisa.nasamreza.org:/mnt/work/mysql

(Patch from 4.0.5)

into mysql.com:/space/my/mysql-3.23

More tests for multi-table-update & timestamp handling