Jörn Heusipp authored Jul 17, 2016 and Ralph Giles committed Jul 28, 2016

Add option -k n to rogg_granule which specifies the number of header packets to be skipped when adjusting granulepos. The default number of packets to skip is 3, which is suitable for Vorbis streams. Do not generally skip pages with granulepos 0 any more, because these can occur as valid Vorbis data pages.