Compatibility syntax: SERIAL, [PRIMARY] KEY and VALUE

Added CEIL as an alias for CEILING
Cleaned up CHECK constraint handling.
(We don't anymore require braces after CHECK)
Added casting to CHAR.

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

     - fix setting of niceness level

support-files/mysql.server.sh
     - applied some fixes from 4.0 mysql.server script
     - fix my.cnf parsing

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

  Flush stderr if we run out of memory, so that the error message more probably finds its way to the error log

Fix for Mac OS X shutdown

into sanja.is.com.ua:/home/bell/mysql/mysql-4.0

excluded double call of 'invalidate()'

 - actually follow the hints in the comment above and "Remember that 
   regexps needs to quote [ and ] since this is run through m4"...

 - fix MYSQL_NO_DASH_VERSION if version number ends on one digit only
   ("comment" test failed when MySQL version was changed from 4.0.5
   to 4.0.5a)

delete from table where column<=>NULL 
on indexed columns

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

into mysql.com:/home/walrus/bk/41

New operators MOD and DIV
SELECT ... FROM DUAL
TRUE = 1 and FALSE = 0

 - applied some changes from the 4.0 tree (enable multiple 
   --conf-environment options, add --with-debug, don't add "-max"
   prefix just because BDB is enabled)

Fix for shutdown on Mac OS X

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

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

  Fix potential bus error in 64-bit computers in SHOW VARIABLES, if int is only 32-bit in them