gst/gstelement.h: remove gst_element_factory_get_version. It doesn't exist anymore.

gst/gstelement.h: remove gst_element_factory_get_version. It doesn't exist anymore.

Original commit message from CVS:
2004-01-26  Benjamin Otte  <in7y118@public.uni-hamburg.de>

* gst/gstelement.h:
remove gst_element_factory_get_version. It doesn't exist anymore.
* gst/gstplugin.c:
* gst/gstplugin.h:
remove gst_plugin_set_name and change gst_plugin_get_longname to
gst_plugin_get_description to match code.
* gst/gsterror.h:
remove GST_LIBRARY_ERROR_ENCODE. It's GST_STREAM_ERROR_ENCODE.
* gst/gstpad.c: (gst_pad_try_set_caps):
make it work with nonfixed caps.
Note that even in the nonfixed case the link function of the pad
that tries to set caps isn't called.