Merge pilot.blaudden:/home/msvensson/mysql/mysql-5.0-maint

into  pilot.blaudden:/home/msvensson/mysql/mysql-5.1-new-maint


mysql-test/r/order_by.result:
  Auto merged
mysql-test/t/order_by.test:
  Auto merged
sql/Makefile.am:
  Auto merged
sql/item.cc:
  Auto merged
sql/item_cmpfunc.cc:
  Auto merged
sql/item_cmpfunc.h:
  Auto merged
sql/mysql_priv.h:
  Auto merged
sql/sql_select.cc:
  Auto merged