Fixed newly introduced bug in rollup

  Added a test case for bug #9210.
sql_select.cc:
  Fixed bug #9210.
  The function calc_group_buffer did not cover the case
  when the GROUP BY expression was decimal.
  Slightly optimized the other code.

into hundin.mysql.fi:/home/heikki/mysql-5.0

  The missing DATA_BINARY_TYPE in BLOBs created with < 4.0.14 does not cause any harm, because there were no indexes on such BLOBs

  Change the sorting order of TEXT columns in InnoDB: pad with spaces at the end in comparisons; we MUST UPDATE the MySQL MANUAL to warn about the need to rebuild tables (also MyISAM) in certain cases in an upgrade to 5.0.3; TODO: study what complications the missing DATA_BINARY_TYPE flag in InnoDB < 4.0.14 causes: we would compare then also BLOBs with space padding, not just TEXT

into a193-229-222-105.elisa-laajakaista.fi:/home/my/bk/mysql-5.0

into hundin.mysql.fi:/home/heikki/mysql-5.0

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

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

into mysql.com:/Users/kent/mysql/bk/mysql-5.0-compile

into mysql.com:/Users/kent/mysql/bk/mysql-5.0-compile

into mysql.com:/Users/kent/mysql/bk/mysql-5.0-compile

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

into mysql.com:/M50/mysql-5.0

  Disabled old feature to disable test cases

into mysql.com:/M50/build-5.0.3

and removed a have_innodb.inc inclusion which was left by mistake
in an earlier change.

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.

into hundin.mysql.fi:/home/heikki/mysql-5.0

  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 hundin.mysql.fi:/home/heikki/mysql-5.0

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