- Changed storage to be 2 bytes instead of sizeof(size_t) (simple optimization)
- Fixed bug when using query_cache_strip_comments and query that started with '('
- Fixed DBUG_PRINT() that used wrong (not initialized) variables.


mysql-test/mysql-test-run.pl:
  Added some space to make output more readable.
mysql-test/r/query_cache.result:
  Updated test results
mysql-test/t/query_cache.test:
  Added test with query_cache_strip_comments
sql/mysql_priv.h:
  Added QUERY_CACHE_DB_LENGTH_SIZE
sql/sql_cache.cc:
  Fixed bug when using query_cache_strip_comments and query that started with '('
  Store db length in 2 characters instead of size_t.
  Get db length from correct position (earlier we had an error when query started with ' ')
  Fixed DBUG_PRINT() that used wrong (not initialized) variables.