ext/divx/gstdivxenc.c: remove bogus gst_caps_is_fixed() test

ext/divx/gstdivxenc.c: remove bogus gst_caps_is_fixed() test

Original commit message from CVS:
* ext/divx/gstdivxenc.c: remove bogus gst_caps_is_fixed() test
* gst/debug/efence.c: (gst_efence_chain), (gst_fenced_buffer_new),
(gst_fenced_buffer_default_copy): Fix for rename of buffer private
structure members.
* gst/effectv/gstwarp.c: (gst_warptv_setup): Don't reset the time
value during a resize/renegotiation.
* gst/videofilter/gstvideofilter.c: (gst_videofilter_chain): use
gst_pad_alloc_buffer();
* sys/v4l/gstv4lmjpegsrc.c: (gst_v4lmjpegsrc_get),
(gst_v4lmjpegsrc_buffer_free): Fix for rename of buffer private
structure members.
* sys/v4l/gstv4lsrc.c: (gst_v4lsrc_get), (gst_v4lsrc_buffer_free):
Fix for rename of buffer private structure members.
* sys/ximage/ximagesink.c: (gst_ximagesink_chain),
(gst_ximagesink_buffer_free), (gst_ximagesink_buffer_alloc):
Fix for rename of buffer private structure members.
* sys/xvimage/xvimagesink.c: (gst_xvimagesink_chain),
(gst_xvimagesink_buffer_free), (gst_xvimagesink_buffer_alloc):
Fix for rename of buffer private structure members.