Original commit message from CVS:
* gst/audiofx/audioamplify.c:
* gst/audiofx/audiochebband.c:
* gst/audiofx/audiocheblimit.c:
* gst/audiofx/audiodynamic.c:
* gst/audiofx/audioinvert.c:
* gst/audiofx/audiopanorama.c:
* gst/audiofx/audiowsincband.c:
* gst/audiofx/audiowsinclimit.c:
Fix long description of audiofx elements. Fixes bug #515457.