Final-review fixes per Monty, pre-push. OK'd for 
push. Please see each file's comments.

into  xiphis.org:/home/antony/work2/p4-bug12096.2

            read buffer
Setting read buffer to values greater than SSIZE_MAX results in
unexpected behavior.

According to read(2) manual:
If count is greater than SSIZE_MAX, the result is unspecified.

Set upper limit for read_buffer_size and read_rnd_buffer_size to
SSIZE_MAX.

into  mysql.com:/home/mydev/mysql-5.0-bug19604

CHECK TABLE did temporarily clear the auto_increment value.
It runs with a read lock, allowing other readers and
conurrent INSERTs. The latter could grab the wrong value
in this moment.

CHECK TABLE does no longer modify the auto_increment value.
Not even for a short moment.

  "Add line for non-executable stack in .s files"
  Fix so that configure will use "--noexecstack" for assembler if gcc supports
  option and compiled C doesn't need executable stack.

into  xiphis.org:/home/antony/work2/p4-bug12096.1

  "Merge table does not work with bit types"
   MERGE should have HA_CAN_BIT_FIELD feature bit set or else table row is
   formatted incorrectly.

The order of acquiring LOCK_mysql_create_db
and wait_if_global_read_lock() was wrong. It could happen
that a thread held LOCK_mysql_create_db while waiting for
the global read lock to be released. The thread with the
global read lock could try to administrate a database too.
It would first try to lock LOCK_mysql_create_db and hang...

The check if the current thread has the global read lock
is done in wait_if_global_read_lock(), which could not be
reached because of the hang in LOCK_mysql_create_db.

Now I exchanged the order of acquiring LOCK_mysql_create_db
and wait_if_global_read_lock(). This makes 
wait_if_global_read_lock() fail with an error message for
the thread with the global read lock. No deadlock happens.

into moonbone.local:/work/19077-bug-5.0-mysql

into  april.(none):/home/svoj/devel/mysql/BUG18233/mysql-5.0

The convert_constant_item() function converts constant items to ints on
prepare phase to optimize execution speed. In this case it tries to evaluate
subselect which contains a derived table and is contained in a derived table. 
All derived tables are filled only after all derived tables are prepared.
So evaluation of subselect with derived table at the prepare phase will
return a wrong result.

A new flag with_subselect is added to the Item class. It indicates that
expression which this item represents is a subselect or contains a subselect.
It is set to 0 by default. It is set to 1 in the Item_subselect constructor
for subselects.
For Item_func and Item_cond derived classes it is set after fixing any argument
in Item_func::fix_fields() and Item_cond::fix_fields accordingly.
The convert_constant_item() function now doesn't convert a constant item
if the with_subselect flag set in it. 

Fixes bug#19040 "yaSSL does not compile on AIX".

into  neptunus.(none):/home/msvensson/mysql/bug18818/my50-bug18818

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

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

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

    ndb: ndb_waiter disconnect/reconnect on get status error

into  production.mysql.com:/usersnfs/tulin/mysql-5.0

into  mysql.com:/usr_rh9/home/elkin.rh9/MySQL/Merge/5.0

into  mysql.com:/opt/local/work/mysql-5.0-runtime-merge

fixing encoding example because of table names can not be in koi8r 
on some platforms.

into mysql.com:/home/psergey/mysql-5.0-bug19618

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

into  mysql.com:/opt/local/work/mysql-5.0-runtime-merge

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

- not having lock can cause "block number list" to become corrupt => crash
- also may result in 2 threads receiving same block no => possble cause of
Bug #13987 Cluster: Loss of data nodes can cause high CPU usage from ndb_mgmd

into mysql.com:/home/psergey/mysql-5.0-bug19618

into  poseidon.ndb.mysql.com:/home/tomas/mysql-4.1

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

into  mysql.com:/data0/knielsen/tmp-5.0

into  mysql.com:/opt/local/work/mysql-5.0-runtime-merge

into  mysql.com:/data0/knielsen/tmp-5.0

into  mysql.com:/users/lthalmann/bk/mysql-5.0-rpl