fix histogram bez keyframe interp, update plugins/fonts/fonts.scale, edl copy clip transition position test, fix multiple proxy assets in single clip rescale, editpanel click2play fix, use brender pref applies without restart
- [DH] cinelerra-5.1/cinelerra/edit.C
- [DH] cinelerra-5.1/cinelerra/editpanel.C
- [DH] cinelerra-5.1/cinelerra/edl.C
- [DH] cinelerra-5.1/cinelerra/mwindow.C
- [DH] cinelerra-5.1/cinelerra/mwindow.h
- [DH] cinelerra-5.1/cinelerra/preferencesthread.C
- [DH] cinelerra-5.1/cinelerra/vwindow.C