Replace use of GST_PAD_FORMATS_FUNCTION() and similar macros with the code that they would expand to.

Original commit message from CVS:
Replace use of GST_PAD_FORMATS_FUNCTION() and similar macros
with the code that they would expand to.
* ext/flac/gstflacdec.c: (gst_flacdec_get_src_formats),
(gst_flacdec_get_src_query_types),
(gst_flacdec_get_src_event_masks):
* ext/gnomevfs/gstgnomevfssrc.c: (gst_gnomevfssrc_get_formats),
(gst_gnomevfssrc_get_query_types),
(gst_gnomevfssrc_get_event_mask):