fixed one bug in event, pk comes first in events...

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

into deer.(none):/home/hf/work/mysql-5.0.8915

into deer.(none):/home/hf/work/mysql-5.0.8915

Made mysql_make_view() to call destructor for st_lex_local objects before
throwing them away (this happens in case of error).

and some SP-related cleanups.

- We don't have separate stage for calculation of list of tables
  to be prelocked and doing implicit LOCK/UNLOCK any more.
  Instead we calculate this list at open_tables() and do implicit
  LOCK in lock_tables() (and UNLOCK in close_thread_tables()).
  Also now we support cases when same table (with same alias) is
  used several times in the same query in SP.

- Cleaned up execution of SP. Moved all common code which handles
  LEX and does preparations before statement execution or complex
  expression evaluation to auxilary sp_lex_keeper class. Now 
  all statements in SP (and corresponding instructions) that
  evaluate expression which can contain subquery have their
  own LEX.

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

into mysql.com:/home/mydev/mysql-4.1-4100

into mysql.com:/home/mydev/mysql-4.1-4100

Added a missing comma.

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

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

    temporary added trace printouts for ndb autotest

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

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

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

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

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

into gluh.mysql.r18.ru:/home/gluh/MySQL-MERGE/mysql-5.0

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

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

into gluh.mysql.r18.ru:/home/gluh/MySQL-MERGE/mysql-5.0