* ffmpeg can handle these through ModPlug
* By default, ffmpoeg will not try these formats because the way to
detect them are a bit unsafe (4 bytes at a particular offset in the file
serve as an identifier). So, hint the sniffing by giving it a filename
of ".mod" to get modplug to be used. This does not affect sniffing in
the regular way for other formats.
* Add some common tracked music formats to the muxer table.
* Fix some tracing to use current (as of ffmpeg 0.10) function names and
because some variables were renamed.
0f7e19ce7e