Do not use short_description in section docs for elements. We extract them from element details and there will be war...

Original commit message from CVS:
* ext/dc1394/gstdc1394.c:
* ext/ivorbis/vorbisdec.c:
* ext/jack/gstjackaudiosink.c:
* ext/metadata/gstmetadatademux.c:
* ext/mythtv/gstmythtvsrc.c:
* ext/theora/theoradec.c:
* gst-libs/gst/app/gstappsink.c:
* gst/bayer/gstbayer2rgb.c:
* gst/deinterlace/gstdeinterlace.c:
* gst/rawparse/gstaudioparse.c:
* gst/rawparse/gstvideoparse.c:
* gst/rtpmanager/gstrtpbin.c:
* gst/rtpmanager/gstrtpclient.c:
* gst/rtpmanager/gstrtpjitterbuffer.c:
* gst/rtpmanager/gstrtpptdemux.c:
* gst/rtpmanager/gstrtpsession.c:
* gst/rtpmanager/gstrtpssrcdemux.c:
* gst/selector/gstinputselector.c:
* gst/selector/gstoutputselector.c:
* gst/videosignal/gstvideoanalyse.c:
* gst/videosignal/gstvideodetect.c:
* gst/videosignal/gstvideomark.c:
* sys/oss4/oss4-mixer.c:
* sys/oss4/oss4-sink.c:
* sys/oss4/oss4-source.c:
Do not use short_description in section docs for elements. We extract
them from element details and there will be warnings if they differ.
Also fixing up the ChangeLog order.

gst/rtpmanager/gstrtpbin.c

@@ -19,7 +19,6 @@
 
 /**
  * SECTION:element-gstrtpbin
- * @short_description: handle media from one RTP bin
  * @see_also: gstrtpjitterbuffer, gstrtpsession, gstrtpptdemux, gstrtpssrcdemux
  *
  * <refsect2>

gst/rtpmanager/gstrtpclient.c

@@ -19,7 +19,6 @@
 
 /**
  * SECTION:element-gstrtpclient
- * @short_description: handle media from one RTP client
  * @see_also: gstrtpjitterbuffer, gstrtpbin, gstrtpsession
  *
  * <refsect2>

gst/rtpmanager/gstrtpjitterbuffer.c

@@ -25,8 +25,6 @@
 
 /**
  * SECTION:element-gstrtpjitterbuffer
- * @short_description: buffer, reorder and remove duplicate RTP packets to
- * compensate for network oddities.
  *
  * <refsect2>
  * <para>

gst/rtpmanager/gstrtpptdemux.c

@@ -25,7 +25,6 @@
 
 /**
  * SECTION:element-gstrtpptdemux
- * @short_description: separate RTP payloads based on the payload type
  *
  * <refsect2>
  * <para>

gst/rtpmanager/gstrtpsession.c

@@ -19,7 +19,6 @@
 
 /**
  * SECTION:element-gstrtpsession
- * @short_description: an RTP session manager
  * @see_also: gstrtpjitterbuffer, gstrtpbin, gstrtpptdemux, gstrtpssrcdemux
  *
  * <refsect2>

gst/rtpmanager/gstrtpssrcdemux.c

@@ -21,7 +21,6 @@
 
 /**
  * SECTION:element-gstrtpssrcdemux
- * @short_description: separate RTP payloads based on the SSRC
  *
  * <refsect2>
  * <para>