Compile fix for test_utils.h
Merge remote-tracking branch 'dirvine/routing_v2' into routing_v2
Merge remote-tracking branch 'upstream/routing_v2' into routing_v2
Mainly work on message types and MessageHandler.
Merge branch 'routing_v2' of github.com:dirvine/MaidSafe-Routing into routing_v2
Compiling routing again.