* Some more hacking at midi2ly.py:
- options and stuff: moved to library for ly2dvi, midi2ly, mup2ly,
update-lily
- handle keys and note names
- simple quantising
- handle tuplets and silly durations
- guess clef
- don't include empty staffs in score
- print relative pitches by default
- don't repeat duration by default
- bugfix: allow 8th notes too
- include new version of input/test/midi-scales.ly
- added barchecks + fix
- bugfix for relative mode