* fixed glide header detection
* added matroska, dvb and pvr USE vars. * enabled support for flac. * removed libdv support since it's deprecated * enabled freetype support if USE=truetype * enabled satellite support if USE=dvb * added local USE variable pvr to compile with pvr support * added local USE variable matroska to compile with experimental matroska support/ebuilds. See also http://forums.gentoo.org/viewtopic.php?t=63722&highlight=matroska.