mysql-test/r/innodb.result:
  Update results
mysql-test/r/warnings.result:
  Update results
sql/item.cc:
  Simple optimization
sql/item_func.cc:
  After merge fix
sql/item_sum.cc:
  Fixes for group_concat and rollup (From Ramil)
sql/sql_parse.cc:
  Remove compiler warning
sql/sql_select.cc:
  Fixed problem with rollup