QtOrganizer: reduce code duplication

inline modifier without static implies external linkage,
so an arbitrary realization of functions may be used
without a warning or error message (tested with gcc).
According to DRY principle, it is better to keep one realization.

Change-Id: Id67a71af0998603707c8c8608e7a9dcd881670f3
Reviewed-by: Alex Blasche <alexander.blasche@digia.com>