JVET-P0588/P0452: Suffix APS (based on !1090)
Implement NAL unit type for suffix APS.
Updates !1090 (closed) after merging !1117 (merged). Also removes use of default values in xWriteAPS().
Implement NAL unit type for suffix APS.
Updates !1090 (closed) after merging !1117 (merged). Also removes use of default values in xWriteAPS().