make escape in pianoroll clear point selection as well as notes

gtk2_ardour/pianoroll.cc

@@ -1681,8 +1681,9 @@ Pianoroll::escape ()
 		return;
 	}
 
-	view->clear_note_selection ();
+	view->clear_selection ();
 }
+
 Gdk::Cursor*
 Pianoroll::which_track_cursor () const
 {

gtk2_ardour/pianoroll_midi_view.cc

@@ -631,3 +631,14 @@ PianorollMidiView::point_selection_changed ()
 		active_automation->line->set_selected_points (_editing_context.get_selection().points);
 	}
 }
+
+void
+PianorollMidiView::clear_selection ()
+{
+	MidiView::clear_note_selection ();
+	PointSelection empty;
+
+	for (CueAutomationMap::iterator i = automation_map.begin(); i != automation_map.end(); ++i) {
+		i->second.line->set_selected_points (empty);
+	}
+}

gtk2_ardour/pianoroll_midi_view.h

@@ -78,6 +78,7 @@ class PianorollMidiView : public MidiView
 	void automation_leave ();
 
 	void point_selection_changed ();
+	void clear_selection ();
 
 	sigc::signal<void> AutomationStateChange;