into  trift2.:/MySQL/M51/push-5.1

into  mysql.com:/home/gluh/MySQL/Merge/5.1-opt

additional call of file->extra() method with HA_EXTRA_NO_CACHE parameter

into  trift2.:/MySQL/M51/push-5.1

into  rakia.gmz:/home/kgeorge/mysql/autopush/B23556-5.0-opt

  merge of the 5.0-opt tree

into  rakia.gmz:/home/kgeorge/mysql/autopush/B23556-5.0-opt

into  rakia.gmz:/home/kgeorge/mysql/autopush/B23556-5.1-opt

into  rakia.gmz:/home/kgeorge/mysql/autopush/B25551-5.0-opt

Reworked a section of code that caused valgrind errors (and that partitioning was not happy about). 

The bug could cause choosing a sub-optimal execution plan for 
a single-table query if a unique index with many null keys were 
defined for the table. 
It happened because the code of the check_quick_keys function 
made an assumption that any key may occur in an unique index 
only once. Yet this is not true for keys with nulls that may 
have multiple occurrences in the index.

into  kahlann.erinye.com:/home/df/mysql/build/mysql-5.1-build-work

into  kahlann.erinye.com:/home/df/mysql/build/mysql-5.0-build-work

into  trift2.:/MySQL/M51/push-5.1

into  trift2.:/MySQL/M50/push-5.0

into  trift2.:/MySQL/M50/push-5.0

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

into  mysql.com:/home/hf/work/25973/my50-25973

Its root cause is a difference between the "readline" and "libedit" (header files)
definitions of "rl_completion_entry_function", where the "libedit" one is wrong anyway:
This variable is used as a pointer to a function returning "char *",
but "libedit" declares it as returning "int" and then adds casts on usage.

Change it to "CPFunction *" and get rid of the casts.

into  rakia.gmz:/home/kgeorge/mysql/autopush/B25575-5.0-opt

 Two problems here:

 Problem 1:

 While constructing the join columns list the optimizer does as follows:
  1. Sets the join_using_fields/natural_join members of the right JOIN 
   operand.
  2. Makes a "table reference" (TABLE_LIST) to parent the two tables.
  3. Assigns the join_using_fields/is_natural_join of the wrapper table
   using join_using_fields/natural_join of the rightmost table
  4. Sets join_using_fields to NULL for the right JOIN operand.
  5. Passes the parent table up to the same procedure on the upper 
   level.

 Step 1 overrides the the join_using_fields that are set for a nested 
 join wrapping table in step 4.
 Fixed by making a designated variable SELECT_LEX::prev_join_using to 
 pass the data from step 1 to step 4 without destroying the wrapping 
 table data.

 Problem 2:

 The optimizer checks for ambiguous columns while transforming 
 NATURAL JOIN/JOIN USING to JOIN ON. While doing that there was no
 distinction between columns that are used in the generated join
 condition (where ambiguity can be checked) and the other columns
 (where ambiguity can be checked only when resolving references
 coming from outside the JOIN construct itself).
 Fixed by allowing the non-USING columns to be present in multiple 
 copies in both sides of the join and moving the ambiguity check 
 to the place where unqualified references to the join columns are
 resolved (find_field_in_natural_join()).

into  mysql.com:/home/hf/work/25973/my51-25973

 The optimizer takes away columns from GROUP BY/DISTINCT if they constitute
 all the parts of an unique index.
 However if some of the columns can contain NULLs this cannot be done 
(because an UNIQUE index can have multiple rows with NULL values).
 Fixed by not using UNIQUE indexes with nullable columns to remove
 grouping columns from GROUP BY/DISTINCT.

into  mysql.com:/home/kent/bk/tmp2/mysql-5.1-build

  If inserting a GPL header, include a complete one
Makefile.am, mysql.dsw, mysql.sln:
  Removed C version of mysql-test-run
mysql.spec.sh:
  Specify GPL license only in GPL sources
.del-my_manage.h:
  Delete: mysql-test/my_manage.h
mysql.spec.sh:
  Added GPL header
.del-mysql_test_run_new.c:
  Delete: mysql-test/mysql_test_run_new.c
.del-mysql_test_run_new.dsp:
  Delete: VC++Files/mysql-test/mysql_test_run_new.dsp
.del-my_create_tables.c:
  Delete: mysql-test/my_create_tables.c
.del-mysql_test_run_new_ia64.dsp:
  Delete: VC++Files/mysql-test/mysql_test_run_new_ia64.dsp
msql2mysql.sh:
  Use up-to-date GPL header
.del-mysql_test_run_new.vcproj:
  Delete: VC++Files/mysql-test/mysql_test_run_new.vcproj
.del-my_manage.c:
  Delete: mysql-test/my_manage.c

into  olga.mysql.com:/home/igor/dev-opt/mysql-5.0-opt-bug24987

Made the function opt_sum_query to return HA_ERR_KEY_NOT_FOUND when
no matches were found (instead of -1 it returned prior this patch).
This changes allow us to avoid possible conflicts with return values
from user-defined handler methods which also may return -1. 
No particular test cases are provided with this fix.

into  kahlann.erinye.com:/home/df/mysql/build/mysql-5.1-build

into  rakia.gmz:/home/kgeorge/mysql/autopush/B25643-5.0-opt

 Checking for NULL before calling the val_xxx()
 methods only checks for such arguments that are 
 known to be NULLs at compile time. 
 The arguments that may or may not contain
 NULLs (e.g. function calls and possibly others)
 are not checked at all.
 Fixed by first calling the val_xxx() method and
 then checking for null in SEC_TO_TIME().
 In addition QUARTER() was not returning 0 (as all the 
 val_int() functions do when processing a NULL value).

into  kahlann.erinye.com:/home/df/mysql/build/mysql-5.0-build-work-25530

into  kahlann.erinye.com:/home/df/mysql/build/mysql-5.1-build-work-25530