[glom] Add a comment.

[Murray Cumming <murrayc src gnome org>]

commit 36da85f0f524b31eb6417cda7e7332fe91e1da56
Author: Murray Cumming <murrayc murrayc com>
Date:   Thu Mar 20 13:09:06 2014 +0100

    Add a comment.

 glom/application.cc |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/glom/application.cc b/glom/application.cc
index e3cacfe..2360368 100644
--- a/glom/application.cc
+++ b/glom/application.cc
@@ -95,6 +95,9 @@ void Application::on_startup()
   //TODO: Remove this if there is ever an easier way to make 'accel's from the .glade file just work.
   //See https://bugzilla.gnome.org/show_bug.cgi?id=708905
 
+  //TODO: Use set_accels_for_action() instead? The documentation is not helpful.
+  //See https://bugzilla.gnome.org/show_bug.cgi?id=721367#c5
+
   //From window_main.glade:
   add_accelerator("<Primary>n", "file.new");
   add_accelerator("<Primary>o", "file.open");