Fix to #471, http://bugs.skysql.com/show_bug.cgi?id=471
Replication lag is not checked in precense of routing hint.
tests for hints and changes in makefiles and configuration files to enable testing them through 'make testall'
Merge remote-tracking branch 'maxscale/hint_tests' into hint_tests

Conflicts:
	server/modules/routing/readwritesplit/test/test_hints/complex_tests
	server/modules/routing/readwritesplit/test/test_hints/rwsplit_hints.sh