(Regression, caused by a patch for the bug 22646).
Problem: when result type of date_format() was changed from
binary string to character string, mixing date_format()
with a ascii column in CONCAT() stopped to work.
Fix:
- adding "repertoire" flag into DTCollation class,
to mark items which can return only pure ASCII strings.
- allow character set conversion from pure ASCII to other character sets.

  Installing the new file required for tests.

into  mysql.com:/home/bar/mysql-work/mysql-5.0.b28916

and is not described in the manual
- Adding missing initialization for utf8 collations
- Minor code clean-ups: renaming variables,
  moving code into a new separate function.
- Adding test, to check that both ucs2 and utf8 user
  defined collations work (ucs2_test_ci and utf8_test_ci)
- Adding Vietnamese collation as a complex user defined
  collation example.

into  mysql.com:/home/bar/mysql-work/mysql-5.0.b26711

Problem: "SELECT INTO OUTFILE" created incorrect dumps for BLOBs,
so "LOAD DATA" later incorrectly interpreted 0x5C as the second
byte of a multi-byte sequence, instead of escape character.
Fix: adding escaping of multi-byte heads.

into  mysql.com:/nfsdisk1/lars/MERGE/mysql-5.0-merge

into  dl145s.mysql.com:/dev/shm/mhansson/my50-bug27741

into  olga.mysql.com:/home/igor/dev-opt/mysql-5.0-opt-bug28728

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

  Corrected test case result for the bug#28494.
item_func.h, item_func.cc:
  Corrected function names after fix for the bug#28494.

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

  Extended test case for the bug#28494.

into  olga.mysql.com:/home/igor/dev-opt/mysql-5.0-opt-bug28728

into  macbook.gmz:/Users/kgeorge/mysql/work/B26162-5.0-opt

  
The value of "low-priority-updates" option and the LOW PRIORITY
prefix was taken into account at parse time.
This caused triggers (among others) to ignore this flag (if
supplied for the DML statement).
Moved reading of the LOW_PRIORITY flag at run time.
Fixed an incosistency when handling
SET GLOBAL LOW_PRIORITY_UPDATES : now it is in effect for
delayed INSERTs.
Tested by checking the effect of LOW_PRIORITY flag via a 
trigger.

into  olga.mysql.com:/home/igor/dev-opt/mysql-5.0-opt-bug28728

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

  Post fix for bug#28494.
  The Item_func_set_user_var::check method now silently doesn't use result_field
  if it isn't defined.

into  olga.mysql.com:/home/igor/dev-opt/mysql-5.0-opt-bug28728

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

This is an additional fix.
Item::val_xxx methods are supposed to use original data source and
Item::val_xxx_result methods to use the item's result field. But for the
Item_func_set_user_var class val_xxx_result methods were mapped to val_xxx
methods. This leads, in particular, to producing bad sort keys and thus
wrong order of the result set of queries with group by/order by clauses.

The set of val_xxx_result methods is added to the Item_func_set_user_var
class. It's the same as the val_xxx set of method but uses the result_field
to return a value.

using a derived table over a grouping subselect.

This crash happens only when materialization of the derived tables 
requires creation of auxiliary temporary table, for example when
a grouping operation is carried out with usage of a temporary table.

The crash happened because EXPLAIN EXTENDED when printing the query
expression made an attempt to use the objects created in the mem_root
of the temporary table which has been already freed by the moment
when printing is called.

This bug appeared after the method Item_field::print() had been 
introduced.    

into  bk-internal.mysql.com:/data0/bk/mysql-5.0-opt

into  magare.gmz:/home/kgeorge/mysql/autopush/B28366-5.0-opt-win

into  dsl-hkibras1-ff5dc300-70.dhcp.inet.fi:/home/elkin/MySQL/TEAM/FIXES/5.0/bug27716-multi_upd_no_binlog

Implementation of mysql_multi_update did not call multi_update::send_error method in some cases 
(see the test reported on bug page and test cases in changeset).

Fixed with deploying the method, ::send_error() is refined to get binlogging code which works whenever 
there is modified non-transactional table.
thd->no_trans_update.stmt flag is set in to TRUE to ease testing though being the beginning of relative 
bug#27417 fix (addresses a part of those issues).
Eliminating two minor issues (small bugs) in multi_update methods.
This patch for multi-update also addresses a part of the issues reported in bug#13270,bug#23333.

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

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

  Additional patch for bug #28244 to workaround valgrind warnings.

into  moonbone.local:/mnt/gentoo64/work/28494-bug-5.0-opt-mysql

The end_update() function uses the Item::save_org_in_field() function to
save original values of items into the group buffer. But for the 
Item_func_set_user_var this method was mapped to the save_in_field method.
The latter function wrongly decides to use the result_field. This leads to
saving incorrect value in the grouping buffer and wrong result of the whole
query.

The can_use_result_field argument of the bool type is added to the
Item_func_set_user_var::save_in_field() function. If it is set to FALSE
then the item's result field won't be used. Otherwise it will be detected
whether the result field will be used (old behaviour).
Two wrapping functions for the function above are added to the 
Item_func_set_user_var class:
the save_in_field(Field *field, bool no_conversions) - it calls the above
function with the can_use_result_field set to TRUE.
the save_org_in_field(Field *field) - same, but the can_use_result_field
is set to FALSE.

ON conditions from JOIN expression were ignored at CHECK OPTION
check when updating a multi-table view with CHECK OPTION.

The st_table_list::prep_check_option function has been
modified to to take into account ON conditions at CHECK OPTION check
It was also changed to build the check option condition only once
for any update used in PS/SP.

into  gleb.loc:/home/uchum/work/bk/mysql-5.0-opt-28244

  Patch to eliminate compilation warning.