Fix documentation paths...
Fix documentation paths
The paths for qdocinc files and for images has been fixed so that
creating the documentation works also for Mac.
Task-number: QTRD-2492
Change-Id: Ibfefd06dfb4d85bbdb10b400aadda204ad50c21a
Reviewed-by: Mika Salmela <mika.salmela@digia.com>