Added new tests to testsuite.


extra/resolveip.c:
  Portabilit fix.
mysql-test/create-test-result:
  Fix for new mysql-test-run
mysql-test/r/query_cache.result:
  Updated benchmarks
mysql-test/t/query_cache-master.opt:
  Updated benchmarks
mysql-test/t/query_cache.test:
  Updated benchmarks
sql/sql_cache.cc:
  Removed not used functions
sql/sql_cache.h:
  Removed not used functions