Add getPregap() method.
* morituri/rip/cd.py:
Use artist.name, not getUniqueName, to avoid monstruous names for
Muse.
Pass mbdiscid to getPath, so Unknown Disc can be saved with it.
Don't set the date if the release doesn't have one.
Set pregap on trackResult using new Track.getPregap()
Write all log/cue/m3u files as utf-8.
8f88db0a29