\compressMusic -> \scaleDurations

[Graham Percival]

To clarify the name -- and incidentaly simply the documentation
explanation of this bad name -- could we make the following
change?
  \compressMusic -> \scaleDurations

- it applies to durations rather than music.  I mean, I could
  argue that \compressMusic should apply to pitches instead of
durations.
- it can make music longer, not just shorter.  So \compress
  doens't make sense.


This would be a simple change since it's just a global change.

Cheers,
- Graham