gst/elements/gsttypefindelement.*: Set caps on first outgoing buffer when we've found...

gst/elements/gsttypefindelement.*: Set caps on first outgoing buffer when we've found the type.

Original commit message from CVS:
* gst/elements/gsttypefindelement.c:
(gst_type_find_element_have_type),
(gst_type_find_element_check_set_buffer_caps),
(gst_type_find_element_init), (stop_typefinding),
(gst_type_find_element_handle_event),
(gst_type_find_element_chain), (gst_type_find_element_getrange):
* gst/elements/gsttypefindelement.h:
Set caps on first outgoing buffer when we've found the type.