suggestion: change OctavateEight name to ClefTransposition - opinions?

[Janek Warchoł]

Hi,

The name "OctavateEight" doesn't have any sense - it doesn't show that
this grob is related to the clef, and anyway the clef can be
"transposed" by any amount, not just an octave.
I suggest to rename this grob to ClefTransposition or something
similar (since this is not strictly transposition, it may be best to
use a slightly different name... ClefShift? At any rate,
ClefOctavation would make much more sense than OctavateEight).
We can also change names of some related context properties, for
example clefOctavation, clefOctavationStyle etc.  My only worry is
that they may become too similar (clefTransposition and
ClefTransposition).
Thoughts?

I'll propose a patch if there's support for the change.
Janek