OS X: Don't build messageserver binary as a bundle.

Change-Id: I3215c99d44dc28b70890fcdd2dd3e4c2e10ba511
Reviewed-by: Robin Burchell <robin+qt@viroteck.net>
Correctly start messageserver5 binary.

Change-Id: I7eb742fc60884881714911e76ea6de6ef4939ca4
Reviewed-by: Robin Burchell <robin+qt@viroteck.net>