Fixing compile errors on Mac 10.8/Qt 5.3 beta.

On Mac you need to use the module name when including files from other modules.

Change-Id: I7a70cdeaaa039bd90e3db277eace016fae1efafe
Reviewed-by: Paul Lemire <paul.lemire@kdab.com>
Reviewed-by: Liang Qi <liang.qi@digia.com>
Reviewed-by: Sean Harmer <sean.harmer@kdab.com>