gst/: splitted gsttypefind into gsttypefind, gsttypefindfactory

gst/: splitted gsttypefind into gsttypefind, gsttypefindfactory

Original commit message from CVS:
* gst/Makefile.am:
* gst/elements/gstbufferstore.h:
* gst/elements/gsttypefindelement.c:
* gst/elements/gsttypefindelement.h:
* gst/gst.h:
* gst/gsttypefind.c:
* gst/gsttypefind.h:
* gst/gsttypefindfactory.c: (gst_type_find_factory_get_type),
(gst_type_find_factory_class_init), (gst_type_find_factory_init),
(gst_type_find_factory_dispose),
(gst_type_find_factory_unload_thyself),
(gst_type_find_load_plugin), (gst_type_find_factory_get_list),
(gst_type_find_factory_get_caps),
(gst_type_find_factory_get_extensions),
(gst_type_find_factory_call_function):
* gst/gsttypefindfactory.h:
* gst/registries/gstlibxmlregistry.c:
* gst/registries/gstxmlregistry.c:
splitted gsttypefind into gsttypefind, gsttypefindfactory