Fairly major change to the way in which crossfades are handled;

they are now done with region fades, rather than separate objects.
After this commit, Ardour will try to convert your session files
to the new crossfade format, but will make a backup in your
session folder first.

If you have works in progress using Ardour 3 it is
***STRONGLY RECOMMENDED*** that you back up session files before
updating to this commit.


git-svn-id: svn://localhost/ardour2/branches/3.0@11986 d708f5d6-7413-0410-9779-e7cbd77b26cf

libs/evoral/src/ControlList.cpp

@@ -465,6 +465,8 @@ ControlList::fast_simple_add (double when, double value)
 	/* to be used only for loading pre-sorted data from saved state */
 	_events.insert (_events.end(), new ControlEvent (when, value));
 	assert(_events.back());
+
+	mark_dirty ();
 }
 
 void