Port simple deinterlacer from 0.8. Use at your own risk, don't blame me for anything...

Port simple deinterlacer from 0.8. Use at your own risk, don't blame me for anything it does or does not do to your p...

Original commit message from CVS:
* configure.ac:
* gst/deinterlace/Makefile.am:
* gst/deinterlace/gstdeinterlace.c: (gst_deinterlace_base_init),
(gst_deinterlace_class_init), (gst_deinterlace_init),
(gst_deinterlace_stop), (gst_deinterlace_transform_caps),
(gst_deinterlace_set_caps), (gst_deinterlace_transform_ip),
(gst_deinterlace_set_property), (gst_deinterlace_get_property):
* gst/deinterlace/gstdeinterlace.h:
Port simple deinterlacer from 0.8. Use at your own risk, don't blame
me for anything it does or does not do to your precious pictures.