Add libgstrmdemux.so to cruft list
Add libgstrmdemux.so to cruft list

This was renamed to libgstrealmedia.so, this fixes helps fixing
uninstalled setup.

https://bugzilla.gnome.org/show_bug.cgi?id=779344

StreamUtils/gst-plugins-ugly,GStreamer/gst-plugins-ugly,StreamUtils/gst-plugins-ugly,GStreamer/gst-plugins-ugly,GrokImageCompression/gst-plugins-ugly,StreamUtils/gst-plugins-ugly,GrokImageCompression/gst-plugins-ugly,GrokImageCompression/gst-plugins-ugly,GStreamer/gst-plugins-ugly