into  gleb.loc:/home/uchum/5.1-opt


sql/item.cc:
  Auto merged
sql/item.h:
  Auto merged
sql/item_cmpfunc.cc:
  Auto merged
sql/item_subselect.cc:
  Auto merged
sql/sp_rcontext.cc:
  Auto merged
sql/sql_class.cc:
  Auto merged
mysql-test/r/subselect.result:
  Merge with 5.0-opt.
mysql-test/t/subselect.test:
  Merge with 5.0-opt.