b) various changes to ControlProtocol model/implementation
c) more attempts to get autoscroll to work nicely (unfinished)
d) move editor item types into their own header
git-svn-id: svn://localhost/trunk/ardour2@506 d708f5d6-7413-0410-9779-e7cbd77b26cf
a) measure lines extend the full height of the canvas
b) region name color bars and text positioning now adjusted to match
font size for different display resolutions
c) vertical scrollbar limited to cover visible tracks only
git-svn-id: svn://localhost/trunk/ardour2@486 d708f5d6-7413-0410-9779-e7cbd77b26cf
