[Lmuse-developer] CVS commit muse: mixer updates

[Werner S. <ws...@se...>]

Removed the midi mixer. Added first code to integrate the midi
mixer into the audio mixer. The mixer is now accessible under
the pulldown menu "Display".
Mixer strips are now handled like special track types in the
arranger. This is some preparation for mixer automation.
Double click creation of tracks is no longer possible.

Regards,
Werner