Don't use gtk-doc markers for normal comments. Fix gtk-doc formatting where required.

Don't use gtk-doc markers for normal comments. Fix gtk-doc formatting where required.

Original commit message from CVS:
* ext/tarkin/wavelet.c:
* ext/tarkin/wavelet.h:
* gst/mpegaudioparse/gstmpegaudioparse.c:
* gst/vbidec/vbidata.c:
* gst/vbidec/vbiscreen.h:
* sys/dxr3/ac3_padder.c:
* sys/dxr3/dxr3audiosink.c:
* sys/dxr3/dxr3spusink.c:
* sys/dxr3/dxr3videosink.c:
* sys/qcam/dark.c:
Don't use gtk-doc markers for normal comments. Fix
gtk-doc formatting where required.