Added new logic to ACL system:

1) If GRANT OPTION (not mysql db):
   Ok to update existing user, but not password.
   Not allowed to make a new user.

2) If UPDATE_ACL to mysql DB:
   Ok to update current user, but not make a new one.

3) If INSERT_ACL to mysql DB:
   Ok to add a new user, but not modify existing.

4) If GRANT OPTION to mysql DB:
   All modifications OK.

  Added a test case for bug #8617.
sql_select.cc:
  Fixed bug #8617.
  Queries with ROLLUP and LIMIT n returned more than n rows
  if SQL_CALC_FOUND_ROWS was used.

into mysql.com:/home/jimw/my/mysql-5.0-clean

into mysql.com:/home/jimw/my/mysql-5.0-clean

into mysql.com:/home/jimw/my/mysql-5.0-build

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

into mysql.com:/home/jimw/my/mysql-5.0-clean

into zim.(none):/home/brian/mysql/mysql-5.0

into mysql.com:/home/jimw/my/mysql-5.0-clean

into mysql.com:/home/jimw/my/mysql-5.0-clean

into mysql.com:/home/jimw/my/mysql-5.0-clean

  transactional test removed
sp_trans.test, sp_trans.result:
  new file

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

into mysql.com:/home/jimw/my/mysql-5.0-build

into mysql.com:/home/jimw/my/mysql-5.0-build

into mysql.com:/home/jimw/my/mysql-5.0-build

into frost.snake.net:/Volumes/frost2/MySQL/bk/mysql-4.1

into sinisa.nasamreza.org:/mnt/work/petica

into frost.snake.net:/Volumes/frost2/MySQL/bk/merge-4.1

into sinisa.nasamreza.org:/mnt/work/petica

  Fix for a bug with test failing with Classic.

into mysql.com:/home/jimw/my/mysql-5.0-build

into zim.(none):/home/brian/mysql/mysql-5.0

into quadxeon.mysql.com:/nfstmp1/guilhem/mysql-4.1-4xeon

into quadxeon.mysql.com:/nfstmp1/guilhem/mysql-4.0-4xeon