gr-iqbalance documentation build problem

Hello. I have some build problem with building gr-igbalance with documentation enabled. Build fails with a message saying that shell interpreter can't execute Doxyfile. It is the same as I noticed some time ago while building gr-osmosdr (see http://lists.osmocom.org/pipermail/osmocom-sdr/2013-April/000553.html ). It was solved by the patch by Jaroslav Škarvada ( http://cgit.osmocom.org/gr-osmosdr/commit/?id=2f6592566bd60d2539f5b976dcf61… ). Similar patch, attached, help for gr-iqbalance. It moves doxygen detection test to toplevel CMakeLists.txt. Please add it to git repository. Wojciech Kazubski