Detect and transcode H264 Hi10p videos

[Will Lunniss]

See http://forum.serviio.org/viewtopic.php?f=5&t=6106 / http://forum.serviio.org/viewtopic.php?f=10&t=6184 for more details

Solution would be to extend what is supported in profiles.xml by adding 'high_10' in addition to the current allowed baseline, main and high values. This would be used as follows:

<Matches container="matroska" vCodec="h264" profile="high_10" levelGreaterThan="1" />