Fix bug and implement return type casting.

  bugfix 9102 corrected the crashing, this corrects the result.

  Initialization of fields for sp return type was not complete.

into mysql.com:/home/dlenev/src/mysql-5.0-merges

into mysql.com:/home/dlenev/src/mysql-5.0-merges

  Style fix

negative argument gives wrong result" into 5.0 tree.

argument gives wrong result" (and similar bug in ADDTIME/SUBTIME)
into 5.0 tree.

into mysql.com:/home/dlenev/src/mysql-4.1-bg8086

into mysql.com:/home/pem/work/mysql-5.0

into mysql.com:/M50/mysql-5.0

into mysql.com:/home/psergey/mysql-5.0-look-range

into mysql.com:/home/psergey/mysql-4.1-bug9439

into mysql.com:/space/my/mysql-5.0-build

into mysql.com:/space/my/mysql-4.1-build

  already (and that's the Makefile that acutally creates it)

into mysql.com:/home/psergey/mysql-4.1-look-range

minimum of lower bounds of two joined intervals.

Changed type of "Sub_part" column in SHOW KEYS from TINYINT to SMALLINT (as MAX_KEY_LENGTH=1024)
(this is the final cset with proper tests)

into mysql.com:/home/mydev/mysql-5.0-bug9188

into mysql.com:/home/mydev/mysql-4.1-bug9188

into mysql.com:/home/mydev/mysql-4.1-bug9487

into mysql.com:/home/mydev/mysql-4.1-bug9188

into mishka.local:/home/my/mysql-5.0

Set bindir, datadir & others if --basedir is given. This ensures that one only has to set basedir in [mysqld] group when moving a binary installation to a not default polace
Use for now safe_mysqld by default. (unless use-manager is set in the [mysql.server] option in my.cnf)
Search first for defaults files in basedir and then in datadir (like mysqld_safe)

into serg.mylan:/usr/home/serg/Abk/mysql-4.1

into rurik.mysql.com:/home/igor/dev/mysql-5.0-0

  Added a test case for bug #9516.
item_subselect.h:
  Fixed bug #9516.
  The bug was due to that fact that the class Item_subselect
  inherited the generic implementation of the function
  not_null_tables that was not valid for the objects
  of this class. As a result evaluation of the
  not_null_tables attribute was not correct for subqueries.
  This caused invalid transformations of outer joins into
  inner joins.

  Added a test case for bug #9338.
sql_select.cc:
  Fixed bug #9338.
  When an occurence of a field reference has to be replaced
  by another field reference the whole Item_field must be
  replaced.
item.cc:
  Fixed bug #9338.
  The method Item_field::replace_equal_field_processor was
  replaced by Item_field::replace_equal_field. The new method
  is used to replace the occurences of Item_field objects.
item.h:
  Fixed bug #9338.
  The virtual function replace_equal_field_processor was replaced
  by replace_equal_field. The latter is supposed to be used as a
  callback function in calls of the method transform.

Don't abort on bootstrap if a wrong --default-storage-engine is specified

into serg.mylan:/usr/home/serg/Abk/mysql-4.1