gst_jpeg_parse() now gathers all scans available in the supplied
buffer. A scan comprises of the scan header and any entropy-coded
segments or restart marker following it. The size and offset to
the associated data (ECS + RST segments) are append to a new
GstJpegScanOffsetSize structure.
Signed-off-by: Gwenole Beauchesne <gwenole.beauchesne@intel.com>
