When reading a view definition from a .frm file it was
throwing a SQL error if the DEFINER user is not defined.
Changed it to a warning to match the (documented) case
when a view with undefined DEFINER user is created.

into  mysql.com:/home/stewart/Documents/MySQL/5.0/main

into mysql.com:/home/hf/work/mysql-5.0.mrg

into mysql.com:/Users/kent/mysql/bk/mysql-5.0-new

  Always compile position independent

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

into  devsrv-b.mysql.com:/users/msvensson/mysql-5.0

into  neptunus.(none):/home/msvensson/mysql/mysql-4.1

into  neptunus.(none):/home/msvensson/mysql/mysql-4.1

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

 - A segfault occured when the function 'kill_server' called 
   'my_sigset' with signal number 0. 'my_sigset' is a macro which
   uses 'sigaction' to install the signal handler with an invalid
   signal number will on most platforms return EINVAL but yields
   a segfauilt on IRIX 6.5
 - The server crash was detected by mysqld_safe and it was restarted although
   a shutdown was requested. 
 - Semantics of kill_server(0) is not known, leaving it intact

into  rurik.mysql.com:/home/igor/mysql-5.0

into  rurik.mysql.com:/home/igor/dev/mysql-5.0-2

  The 'decimals' member of Item_func was being improperly initialized,
  which resulted in improper results when handling large numeric values.

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

A further reduction in CPU usage by ndb_mgmd with failed data nodes.

into  rurik.mysql.com:/home/igor/dev/mysql-5.0-2

This bug was introduced when the patch resolving the
performance problem 17164 was applied. As a result
of that modification the not_null_tables attributes
were calculated incorrectly for constant OR conditions.
This triggered invalid conversion of outer joins into
inner joins.

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. 

into mysql.com:/Users/kent/mysql/bk/mysql-5.0-new

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

into mysql.com:/home/hf/work/mysql-5.0.mrg

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

into  neptunus.(none):/home/msvensson/mysql/bug18818/my41-bug18818

into  production.mysql.com:/usersnfs/tulin/mysql-4.1

The select statement that specified a view could be
slightly changed when the view was saved in a frm file.
In particular references to an alias name in the HAVING
clause could be substituted for the expression named by
this alias.
This could result in an error message for a query of
the form SELECT * FROM <view>. Yet no such message
appeared when executing the query specifying the view.

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-4.1-main

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

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

into  mysql.com:/data0/mysqldev/my/mysql-4.1

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