Log Message:
Update to 1.2.0:

libvorbis 1.2.0 (2007-07-25) -- "Xiph.Org libVorbis I 20070622"

 * new ov_fopen() convenience call that avoids the common
   stdio conflicts with ov_open() and MSVC runtimes.
 * libvorbisfile now handles multiplexed streams
 * improve robustness to corrupt input streams
 * fix a minor encoder bug
 * updated RTP draft
 * build system updates
 * minor corrections to the specification