* commented out a crash line in ardour_ui2.cc (added a warning message).
(I thought, it may be fairly efficient to keep issues as code instead of putting
them in the tracker where hardly ever one would notice the needle in the haystack)
* forgot to clear two other collections on MidiPatchManager::refresh()
git-svn-id: svn://localhost/ardour2/branches/3.0@4312 d708f5d6-7413-0410-9779-e7cbd77b26cf
* created ArdourCanvas::CanvasFlag as a base class for flags
* removed obsolete cruft from midi_model
* made MidiTimeAxisView and MidiRegionView work together to display program changes as
names by means of MidiPatchManager
git-svn-id: svn://localhost/ardour2/branches/3.0@4307 d708f5d6-7413-0410-9779-e7cbd77b26cf