to be in the query cache. (BUG#14652)


mysql-test/r/query_cache.result:
  BUG#14652 test suite.
mysql-test/t/query_cache.test:
  BUG#14652 test suite.
sql/sql_cache.cc:
  We should skip beggining '(' characters when test query on possibility
  to be in the query cache.