Merge polly.local:/home/kaa/src/maint/mysql-5.0-maint

into  polly.local:/home/kaa/src/maint/mysql-5.1-maint


sql/item_func.cc:
  Auto merged
sql/item_func.h:
  Auto merged
sql/item_strfunc.cc:
  Auto merged
sql/mysql_priv.h:
  Auto merged