mysql-test/r/group_by.result:
  Auto merged
mysql-test/r/user_var.result:
  Auto merged
sql/item_row.cc:
  Auto merged
sql/item_strfunc.cc:
  Auto merged
sql/unireg.h:
  Auto merged
sql/item_cmpfunc.cc:
  manual merge
sql/item_func.cc:
  no changes