For queries with GROUP BY and without hidden GROUP BY fields DISTINCT is
optimized away becuase such queries produce result set without duplicates.
But ROLLUP can add rows which may be same to some rows and this fact was
ignored.

Added check so if ROLLUP is present DISTINCT can't be optimized away.

into  mysql.com:/home/jimw/my/mysql-4.1-clean

into mysql.com:/Users/kent/mysql/bk/mysql-4.1

into  mysql.com:/home/jimw/my/mysql-4.1-clean

into dl145b.mysql.com:/home/ndbdev/tomas/mysql-4.1

into  selena.:H:/MYSQL/src/#05588-mysql-4.1

into  kite-hub.kitebird.com:/tmp/merge-4.1

into  kite-hub.kitebird.com:/tmp/merge-4.1

  Update README (2nd try)

into  mysql.com:/home/jimw/my/mysql-4.1-clean

into mysql.com:/home/gluh/MySQL/Bugs/4.1.6008

into  mishka.mysql.com:/home/my/mysql-4.1

Fix for bug #13025; Server crash in filesort because wrong call to handler::position()

into mysql.com:/home/gluh/MySQL/Bugs/4.1.6008

into mysql.com:/home/gluh/MySQL/Bugs/4.1.6008

into  eel.(none):/home/jonas/src/mysql-4.1-push

  produce warning for 'create database if not exists' if database exists
  do not update database options in this case  
  produce warning for 'create table if not exists' if table exists

corrected typo in ndb Parser

into  mysql.com:/users/lthalmann/bk/mysql-4.1-magnus

into  eel.(none):/home/jonas/src/mysql-4.1-push

to eliminate nondeterminism in slave start

into  eel.(none):/home/jonas/src/mysql-4.1-push

into  mysql.com:/users/lthalmann/bk/mysql-4.1-magnus

into  a193-229-222-105.elisa-laajakaista.fi:/home/my/bk/mysql-4.1

into  eel.(none):/home/jonas/src/mysql-4.1-push

into  a193-229-222-105.elisa-laajakaista.fi:/home/my/bk/mysql-4.1

into  eel.(none):/home/jonas/src/mysql-4.1-push

into moonbone.local:/work/12695-bug-4.1-mysql

  Customer's test case for bug#12695 Item_func_isnull::update_used_tables() did 
  not update const_item_cache.

into  eel.(none):/home/jonas/src/mysql-4.1-push

into  a193-229-222-105.elisa-laajakaista.fi:/home/my/bk/mysql-4.1

into  mysql.com:/home/alexi/dev/mysql-4.1-12101

into  eel.(none):/home/jonas/src/mysql-4.1-push

Added test case.