trigger starts trigger".

In short, the deadlock/crash happened when execution of statement, which used
stored functions or activated triggers, coincided with alteration of the
tables used by these functions or triggers (in highly concurrent environment).

Bug was caused by the incorrect handling of tables from prelocked set in
open_tables() functions in situations when refresh happened. This fix replaces
old smart but not very robust way of handling tables after refresh (which was
closing only old tables), with new one which simply closes all tables opened so
far and restarts open_tables().
Also fixed handling of temporary tables in close_tables_for_reopen().

No test case present since bug manifests itself only in concurrent environment.

into  mysql.com:/home/alexi/innodb/mysql-5.0-ss162

  Applied innodb-5.0-ss149/162 snapshots.

into  devsrv-b.mysql.com:/space/magnus/my50-bug15302

into  mysql.com:/usr/local/mysql/mysql-5.0

into  devsrv-b.mysql.com:/space/magnus/my50-bug15302

into  mysql.com:/home/dlenev/src/mysql-5.0-bg16829

into  neptunus.(none):/home/msvensson/mysql/bug15302/my50-bug15302

into  mysql.com:/extern/mysql/work/bug15737/mysql-5.0

 - Change "mysql_create_db" to not call "send_ok" if in silent mode i.e. called from "load_master_data"
 - Change mysqltest to detect when there aren't as many warnings available as was reported.

into  mysql.com:/home/dlenev/src/mysql-5.0-bg16829

Add / to std_data in ln command

into  mysql.com:/extern/mysql/work/bug15737/mysql-5.0

into  neptunus.(none):/home/msvensson/mysql/mysql-5.0

 - Use "../tmp" as --slave-load-tmpdir. Same as in mysql-test-run.pl

into  govinda.patg.net:/home/patg/mysql-build/mysql-5.0

into  mysql.com:/home/alexi/innodb/mysql-5.0-ss20

  Applied innodb-4.1-ss20 snapshot.

into  govinda.patg.net:/home/patg/mysql-build/mysql-5.0

into  mysql.com:/extern/mysql/work/bug15737/mysql-5.0

into  mysql.com:/extern/mysql/work/bug15737/mysql-5.0

into  selena.:H:/MYSQL/src/#15634-mysql-5.0

into  mysql.com:/home/alexi/innodb/mysql-5.0-ss17

into  mysql.com:/home/alexi/innodb/mysql-5.0-ss17

  Applied innodb-4.1-ss17 snapshot.
  Do not mistake TABLENAME_ibfk_0 for auto-generated id.

into  neptunus.(none):/home/msvensson/mysql/mysql-5.0

into  neptunus.(none):/home/msvensson/mysql/mysqltest_var/my50-mysqltest_var-integration

  Fix test result.
table.h, sql_show.cc:
  Put I_S tables in lexical order.

We should disallow usage of RETURN statement in triggers and emit
error at parsing time (instead of crashing when trigger is fired).

The problem has manifested itself in the cases when we have a nested outer join
for which it can be inferred that one of the inner tables is a single row table.

Added fixes to make last_insert_id() to work.

into  neptunus.(none):/home/msvensson/mysql/mysqltest_var/my50-mysqltest_var-integration

Merge neptunus.(none):/home/msvensson/mysql/mysqltestrun_check_testcases/my50-mysqltestrun_check_testcases
into  neptunus.(none):/home/msvensson/mysql/mysqltest_var/my50-mysqltest_var-integration

Cleanup the sideeffects from most of the  testcases with sideeffects.

into  neptunus.(none):/home/msvensson/mysql/mysqltest_var/my50-mysqltest_var-integration

into  neptunus.(none):/home/msvensson/mysql/mysqltest_var/my50-mysqltest_var-integration