Merge with 5.0-opt.

into  devsrv-b.mysql.com:/data0/gshchepa/mysql-5.1-opt

into  devsrv-b.mysql.com:/data0/gshchepa/mysql-5.0-opt

into  gleb.loc:/home/uchum/work/bk/5.0-opt-27695

into  gleb.loc:/home/uchum/work/bk/5.1-opt

into  gleb.loc:/home/uchum/work/bk/5.1-opt

into  gleb.loc:/home/uchum/work/bk/5.0-opt

into  trift2.:/MySQL/M51/tmp-5.1

into  trift2.:/MySQL/M51/tmp-5.1

into  trift2.:/MySQL/M50/tmp-5.0

Declaring an all space column name in the SELECT FROM DUAL or in a view
leads to misleading warning message:
"Leading spaces are removed from name ' '".

The Item::set_name method has been modified to raise warnings like
"Name ' ' has become ''" in case of the truncation of an all
space identifier to an empty string identifier instead of the
"Leading spaces are removed from name ' '" warning message.

into  gleb.loc:/home/uchum/work/bk/5.1-opt

into  gleb.loc:/home/uchum/work/bk/5.0-opt

into  gleb.loc:/home/uchum/work/bk/5.1-opt

  Post-merge fix.

into  gleb.loc:/home/uchum/work/bk/5.1-opt

into  gleb.loc:/home/uchum/work/bk/5.0-opt

into  bk-internal.mysql.com:/data0/bk/mysql-5.1-opt

into  mysql.com:/home/psergey/mysql-5.0-bug30385

in get_index_for_order(), don't walk over the end of the index key parts
when matching index description and needed ordering.

into  mysql.com:/home/hf/work/28430/my51-28430

In the ha_partition::position() we don't calculate the number
of the partition of the record, but use m_last_part value instead,
relying on that it's previously set by some other call like ::write_row().
Delete_rows_log_event::do_exec_row() calls find_and_fetch_row(),
where we used position() + rnd_pos() call for the InnoDB-based PARTITION-ed
table as there HA_PRIMARY_KEY_REQUIRED_FOR_POSITION enabled.

fixed by introducing new handler::rnd_pos_by_record() method to be
used for random record-based positioning

into  gleb.loc:/home/uchum/work/bk/5.1-opt

into  gleb.loc:/home/uchum/work/bk/5.1-opt

into  gleb.loc:/home/uchum/work/bk/5.0-opt

  Post-merge fix.

into  moksha.local:/Users/davi/mysql/push/mysql-5.1-runtime

the first query is not running while we are doing wait queries on
a second connection.

  Post-merge fix.

into  gleb.loc:/home/uchum/work/bk/5.1-opt

into  omega.weblab:/home/malff/TREE/mysql-5.1-rt-merge

into  omega.weblab:/home/malff/TREE/mysql-5.1-cleanup

Fixed test failure under heavy load, in case truncate table is slow.

the first query is not running while we are doing wait queries on
a second connection.