[CM] midi-msgs

[Rick Taube]

> ; This doesn't perform a diminuendo in 2.4.1 (it works in 2.3.4) :
> (events (dim-test-1 0 2 90 0 20) "midi.port")
> ; With a non-diminishing sound on channel 0

it turns out the problem was that I forgot to include a write-event method
for midimsg in the midishare code. ooops! its fixed in cvs (but only the
cm-2_4_1-fixes branch) and will be included it in the release tarball  I
hope to make tomorrow morning.

-rick