Post-merge fix warning

  Post-merge fix (byte -> uchar)

into  quadxeon.mysql.com:/benchmarks/ext3/TOSAVE/tsmith/bk/maint/jun05/51

into  quadxeon.mysql.com:/benchmarks/ext3/TOSAVE/tsmith/bk/maint/jun05/51

into  quadxeon.mysql.com:/benchmarks/ext3/TOSAVE/tsmith/bk/maint/jun05/50

into  quadxeon.mysql.com:/benchmarks/ext3/TOSAVE/tsmith/bk/maint/jun05/51

into  quadxeon.mysql.com:/benchmarks/ext3/TOSAVE/tsmith/bk/maint/jun05/50

into  quadxeon.mysql.com:/benchmarks/ext3/TOSAVE/tsmith/bk/maint/jun05/51

into  quadxeon.mysql.com:/benchmarks/ext3/TOSAVE/tsmith/bk/maint/jun05/50

into  amd64.(none):/src/bug24400/my41-bug24400

into  amd64.(none):/src/bug24400/my50-bug24400

into  amd64.(none):/src/bug24400/my51-bug24400

into  amd64.(none):/src/bug24400/my51-bug24400

into  amd64.(none):/src/bug24400/my50-bug24400

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

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

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

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

into  mysql.com:/home/ram/work/b28652/b28652.5.0

into  mysql.com:/home/ram/work/b28652/b28652.5.1

into  dl145s.mysql.com:/dev/shm/mhansson/my51-bug27741-mpush

  Post merge fix for the bug#28494.

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

into  moonbone.local:/mnt/gentoo64/work/test-5.1-opt-mysql

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  moonbone.local:/mnt/gentoo64/work/test-5.1-opt-mysql

into  amd64.(none):/src/bug24732/my50-bug24732

into  amd64.(none):/src/bug24732/my51-bug24732

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.