Enabling rpl_udf test.

into  mysql.com:/home/svoj/devel/mysql/BUG27564/mysql-5.1-engines

into  mysql.com:/home/svoj/devel/mysql/BUG27564/mysql-5.0-engines

Dropping an user defined function may cause server crash in
case this function is still in use by another thread.

The problem was that our hash implementation didn't update
hash link list properly when hash_update() was called.

          causing update of a different column

For efficiency some storage engines do not read a complete record
for update, but only the columns required for selecting the rows.

When updating a row of a partitioned table, modifying a column
that is part of the partition or subpartition expression, then
the row may need to move from one [sub]partition to another one.
This is done by inserting the new row into the target
[sub]partition and deleting the old row from the originating one.
For the insert we need a complete record.

If an above mentioned engine was used for a partitioned table, we
did not have a complete record in update_row(). The implicitly
executed write_row() got an incomplete record.

This is solved by instructing the engine to read a complete record
if one of the columns of the partition or subpartiton is to be
updated.

No testcase. This can be reproduced with Falcon only. The engines
contained in standard 5.1 do always return complete records on
update.

fixes test breakage on sles10-ia64-a which omits charset.

into  mysql.com:/home/svoj/devel/mysql/BUG29299/mysql-5.1-engines

into  mysql.com:/home/svoj/devel/mysql/BUG29299/mysql-5.0-engines

into  anubis.xiphis.org:/usr/home/antony/work/mysql-5.1-merge

Fixed warnings
Fixed error numbers

into  olga.mysql.com:/home/igor/dev-opt/mysql-5.1-opt

into  olga.mysql.com:/home/igor/mysql-5.0-opt

into  magare.gmz:/home/kgeorge/mysql/autopush/B29157-5.1-opt

into  synthia.local:/home/mydev/mysql-5.1-axmrg

into  synthia.local:/home/mydev/mysql-5.0-axmrg

into  synthia.local:/home/mydev/mysql-5.1-axmrg

into  synthia.local:/home/mydev/mysql-5.1-axmrg

into  synthia.local:/home/mydev/mysql-5.1-axmrg

into  anubis.xiphis.org:/usr/home/antony/work/5.0-engines-merge

pointer into a BOOL type.

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

When a UNION statement forced conversion of an UTF8
charset value to a binary charset value, the byte
length of the result values was truncated to the
CHAR_LENGTH of the original UTF8 value.

into  anubis.xiphis.org:/usr/home/antony/work/5.0-engines-merge

into  anubis.xiphis.org:/usr/home/antony/work/p2-bug25513.5

into  synthia.local:/home/mydev/mysql-5.0-axmrg

into  synthia.local:/home/mydev/mysql-5.0-axmrg

into  synthia.local:/home/mydev/mysql-5.1-axmrg

into  moonbone.local:/mnt/gentoo64/work/29261-bug-5.0-opt-mysql

spaces.

When the my_strnncollsp_simple function compares two strings and one is a prefix
of another then this function compares characters in the rest of longer key
with the space character to find whether the longer key is greater or less.
But the sort order of the collation isn't used in this comparison. This may
lead to a wrong comparison result, wrongly created index or wrong order of the
result set of a query with the ORDER BY clause.

Now the my_strnncollsp_simple function uses collation sort order to compare
the characters in the rest of longer key with the space character.

into  magare.gmz:/home/kgeorge/mysql/autopush/B27333-gcov-5.0-opt

query / no aggregate of subquery
 The optimizer counts the aggregate functions that 
 appear as top level expressions (in all_fields) in 
 the current subquery. Later it makes a list of these
 that it uses to actually execute the aggregates in
 end_send_group().
 That count is used in several places as a flag whether
 there are aggregates functions.
 While collecting the above info it must not consider
 aggregates that are not aggregated in the current 
 context. It must treat them as normal expressions 
 instead. Not doing that leads to incorrect data about
 the query, e.g. running a query that actually has no
 aggregate functions as if it has some (and hence is
 expected to return only one row).
 Fixed by ignoring the aggregates that are not aggregated
 in the current context. 
 One other smaller omission discovered and fixed in the 
 process : the place of aggregation was not calculated for
 user defined functions. Fixed by calling 
 Item_sum::init_sum_func_check() and 
 Item_sum::check_sum_func() as it's done for the rest of 
 the aggregate functions.

into  mysql.com:/home/hf/work/29247/my51-29247

into  mysql.com:/home/hf/work/29247/my50-29247

into  mysql.com:/home/hf/work/29247/my51-29247