Printf format fixes.

Printf format fixes.

Original commit message from CVS:
* ext/cairo/gsttimeoverlay.c:
(gst_cairo_time_overlay_update_font_height):
* ext/gdk_pixbuf/pixbufscale.c: (gst_pixbufscale_transform_caps):
* ext/jpeg/gstjpegdec.c: (gst_jpeg_dec_parse_image_data):
* ext/jpeg/gstjpegenc.c: (gst_jpegenc_chain):
* ext/jpeg/gstsmokedec.c: (gst_smokedec_chain):
* ext/jpeg/gstsmokeenc.c: (gst_smokeenc_chain):
* ext/libpng/gstpngdec.c: (user_endrow_callback):
* gst/auparse/gstauparse.c: (gst_au_parse_parse_header):
* gst/avi/gstavidemux.c: (gst_avi_demux_parse_superindex),
(gst_avi_demux_parse_subindex), (gst_avi_demux_parse_stream),
(gst_avi_demux_stream_data):
* gst/cutter/gstcutter.c: (gst_cutter_chain):
* gst/debug/efence.c: (gst_efence_buffer_alloc),
(gst_fenced_buffer_copy):
* gst/id3demux/id3v2frames.c: (id3demux_id3v2_parse_frame):
* gst/matroska/matroska-demux.c: (gst_matroska_demux_add_stream):
* gst/matroska/matroska-mux.c: (gst_matroska_mux_start):
* gst/rtsp/gstrtspsrc.c: (gst_rtspsrc_send),
(gst_rtspsrc_handle_message):
* gst/wavparse/gstwavparse.c: (gst_wavparse_stream_headers):
* sys/ximage/ximageutil.c: (ximageutil_xcontext_get):
Printf format fixes.