plugins/elements/gstfilesink.*: Fix position reporting; rename data_written member to current_pos to reflect its real...
Original commit message from CVS:
Patch by: Mark Nauwelaerts <manauw at skynet be>
* plugins/elements/gstfilesink.c: (gst_file_sink_open_file),
(gst_file_sink_query), (gst_file_sink_do_seek),
(gst_file_sink_get_current_offset), (gst_file_sink_render):
* plugins/elements/gstfilesink.h:
Fix position reporting; rename data_written member to current_pos to
reflect its real meaning (fixes #412648).