added fixes to core tests failing even though they passed, hint syntax test only checking for a partial logfile and readwritesplit tests being run twice.
Merge branch 'Z2' of https://github.com/skysql/MaxScale into testing_makefile_fix
Merge pull request #16 from skysql/testing_makefile_fix

Testing makefile fix
add gcov patch
Merge remote-tracking branch 'origin/Z2' into filter_harness