removed server options


BitKeeper/deleted/.del-query_cache-master.opt~c4daeaa5e40881:
  Delete: mysql-test/t/query_cache-master.opt
mysql-test/r/query_cache.result:
  test for BUG#988
mysql-test/t/query_cache.test:
  test for BUG#988
  removed server options
sql/sql_cache.cc:
  fixed moving query block with pointers to same table in it