Import utilities from Tomboy

Import utilities from Tomboy

This imports the global keybinder, along with its dependencies, as well
as the improved presentation functions (to deal properly with focus-stealing)
from Tomboy (http://www.gnome.org/projects/tomboy/). Thanks GPL!

The keybinder is minimally modified from the tomboy version. Instead of
returning void, it returns a gboolean indicating whether or not the
key-grab was successful.

The utilities package has only the #include "config.h" removed.