Bugs#9057: Incorrect errormsg for too-large char field in table definition

handle_connections_shared_memory (double free spotted by Monty).

into mysql.com:/usr/home/bar/mysql-4.1

Not active by default.
One need to pass -DHAVE_CYBOZU_COLLATION to 
activate it.

into mysql.com:/home/cps/mysql/trees/mysql-4.1

into mysql.com:/space/pekka/ndb/version/my41

into serg.mylan:/usr/home/serg/Abk/mysql-4.1

  Bug #6519 UNION with collation binary and latin1_swedish_ci fails now
  Prove that this problem was fixed with bug9425 fix too.

Coercibility fixes for numeric types and not defined values were done.

into serg.mylan:/usr/home/serg/Abk/mysql-4.1

  Prove that the queries mentioned in
  Bugs#5980: NULL requires a characterset in a union
  works fine after recent changes related to itroducing
  more coercibility level: IRNORABLE and SYSCONST.

into serg.mylan:/usr/home/serg/Abk/mysql-4.1

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

provide created shared memory objects with proper
access rights to make them usable when client and server
are running under different accounts. 
Post review fixes.

into zim.(none):/home/brian/mysql/mysql-4.1

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

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

  Don't run GBK test if not GBK support was compiled.

into zim.(none):/home/brian/mysql/mysql-4.1

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

  Wrong help string fix.

into mysql.com:/usr/home/bar/mysql-4.1

in some cases, because "charset(x) = 'string'" was considered
as "x is not null" due to incorrect not_null_tables().

into neptunus.(none):/home/msvensson/mysql/bug9303

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

    followup - results fixed

into serg.mylan:/usr/home/serg/Abk/mysql-4.1

    corrected number of fields for --enable_metadata
sql/sql_union.cc
    fixed a apparent typo in assert