removed unnecessary privilege checks for I_S schema

into  mysql.com:/home/psergey/mysql-5.1-bug32772

added new func mysql_create_like_schema_frm() which creates frm file based on I_S table

The bug was that for ordered index scans, ha_partition::index_init() did
not put index columns into table->read_set if the underlying storage 
engine did not have HA_PARTIAL_COLUMN_READ flag. 
This was causing assertion failure when handle_ordered_index_scan() tried
to sort the records according to index order.

Fixed by making ha_partition::index_init() put index columns into table->read_set
for all ordered scans. 

into  magare.gmz:/home/kgeorge/mysql/work/B30355-5.1-opt

There's currently no way of knowing the determinicity of an UDF.
And the optimizer and the sequence() UDFs were making wrong
assumptions about what the is_const member means.
Plus there was no implementation of update_system_tables()
causing the optimizer to overwrite the information returned by
the <udf>_init function.

Fixed by equating the assumptions about the semantics of 
is_const and providing a implementation of update_used_tables().
Added a TODO item for the UDF API change needed to make a better 
implementation.

  Test case for the bug#31048 is moved to the subselect_notembedded tests as the embedded server isn't affected by this bug.

into  polly.(none):/home/kaa/src/opt/mysql-5.1-opt

into  polly.(none):/home/kaa/src/opt/bug28837/my51-bug29131

self-join

When doing DELETE with self-join on a MyISAM or MERGE table, it could
happen that a record being retrieved in join_read_next_same() has
already been deleted by previous iterations. That caused the engine's
index_next_same() method to fail with HA_ERR_RECORD_DELETED error and
the whole DELETE query to be aborted with an error.

Fixed by suppressing the HA_ERR_RECORD_DELETED error in
hy_myisam::index_next_same() and ha_myisammrg::index_next_same(). Since
HA_ERR_RECORD_DELETED can only be returned by MyISAM, there is no point
in filtering this error in the SQL layer.

into  magare.gmz:/home/kgeorge/mysql/autopush/B32036-5.1-opt

into  magare.gmz:/home/kgeorge/mysql/work/B32036-5.1-opt

  crashes MySQL 5.122
There was a difference in how UNIONs are handled
on top level and when in sub-query.
Because the rules for sub-queries were syntactically
allowing cases that are not currently supported by
the server we had crashes (this bug) or wrong results
(bug 32051).
Fixed by making the syntax rules for UNIONs match the 
ones at top level.

These rules however do not support nesting UNIONs, e.g.
(SELECT a FROM t1 UNION ALL SELECT b FROM t2) 
 UNION
(SELECT c FROM t3 UNION ALL SELECT d FROM t4)
Supports for statements with nested UNIONs will be
added in a future version.

into  magare.gmz:/home/kgeorge/mysql/work/B32268-5.1-opt

result fix

into  mysql.com:/home/hf/work/30284/my51-30284

into  mysql.com:/home/hf/work/30284/my50-30284

into  mysql.com:/home/hf/work/30284/my50-30284

into  mysql.com:/home/hf/work/30284/my51-30284

into  mysql.com:/home/hf/work/30284/my41-30284

into  mysql.com:/home/hf/work/30284/my51-30284

into  mysql.com:/home/hf/work/30284/my50-30284

into  polly.(none):/home/kaa/src/opt/mysql-5.1-opt

into  mysql.com:/home/gluh/MySQL/Merge/5.1-opt

disable decoding of table name if the table is internal temporary table

into  magare.gmz:/home/kgeorge/mysql/autopush/B32400-5.0-opt

into  magare.gmz:/home/kgeorge/mysql/work/B32400-5.1-opt

into  magare.gmz:/home/kgeorge/mysql/work/B32400-5.1-opt

into  mysql.com:/home/gluh/MySQL/Merge/5.1-opt

The crash happens because we change share->partition_info where 'share' is global struct
(it affects other threads which use the same 'share').
It causes discrepancy between 'share' and handler data. 
The fix:
Move share->partition_info update into WFRM_INSTALL_SHADOW part which is protected by OPEN_lock.

into  polly.(none):/home/kaa/src/opt/mysql-5.1-opt

into  polly.(none):/home/kaa/src/opt/mysql-5.1-opt

into  magare.gmz:/home/kgeorge/mysql/work/merge-5.1-opt

change the size of core files.

Suppress the 'setrlimit could not change the size of the core files'
warning in mysql-test-run. We do not want core files on some of the
PushBuild hosts, and PushBuild itself does not set --core-files, so
that warning is expected.

  Fix for the bug#31048 for 64bit platforms.
subselect.test, subselect.result:
  Corrected text case for the bug#31048.

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

Problem:

The "Slave I/O thread couldn't register on master" error sporadically
occurred in replication tests because the slave I/O thread got
killed by STOP SLAVE before or while registering on master.

Fixed by checking the state of the I/O thread, and issueing
the error only if it was not explicitely killed by a user.