Optimize new pushed code

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

into  krsna.patg.net:/home/patg/mysql-build/mysql-5.0.test2

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

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

Compile max with --yassl instead of --with-openssl

into moonbone.local:/work/14186-bug-5.0-mysql

into lmy004.:/work/mysql-5.0-bug14381

(BDB keylength limitted to 255)

  After merge fix

into  mysql.com:/home/jimw/my/mysql-4.1-clean

into  krsna.patg.net:/home/patg/mysql-build/mysql-5.0.test2

into  mysql.com:/users/lthalmann/bk/mysql-5.0-base64

into mysql.com:/data0/mysqldev/lenz/mysql-4.1

into  mysql.com:/users/lthalmann/bk/mysql-5.0-base64

into mysql.com:/data0/mysqldev/lenz/mysql-5.0

into moonbone.local:/work/14186-bug-4.1-mysql

Fix for bug #14536: SELECT @A,@A:=... fails with prepared statements

Removed wrong fix for bug #14009 (use of abs() on null value causes problems with filesort)
Mark that add_time(), time_diff() and str_to_date() can return null values

into  mysql.com:/users/lthalmann/bk/mysql-5.0-base64

into  mysql.com:/usr/home/ram/work/mysql-4.1

into  krsna.patg.net:/home/patg/mysql-build/mysql-5.0.test2

Post-review fixes

  Make IM ports change with MTR_BUILD_THREAD

Added FIELD_TYPE_BIT to field method 'needs_quotes' to make BIT columns
work.

even when --ledir option is specified. (Bug #13774)

1. Made sure that base64 string is terminated with NUL.
2. Made calculation of needed size for base64 string exact.
Added checks in test for the above two fixes.

get real results after all checks.
(see bug #14254: func_crypt.test fails on FreeBSD with --ps-protocol).