Remove (always false) duration & is_transient and (always true) editable, with_info & follows_playhead parameters from MainClock constructor, and just pass the requisite true & false values along to the AudioClock constructor instead.
Find the absolute position of the main clock when 'display delta to edit cursor' is set when adding/editing tempo/meter changes from the context menu.
Add 'Edit Tempo/Meter' and 'Insert Tempo/Meter Change' to the main clock's context menu.
git-svn-id: svn://localhost/ardour2/branches/3.0@12517 d708f5d6-7413-0410-9779-e7cbd77b26cf
