Update MAINTAINERS file to new required format.
Update MAINTAINERS file to new required format.

svn path=/trunk/; revision=901

johne53/MB3Gtkmm,GNOME/gtkmm,GNOME/gtkmm,GNOME/gtkmm,GNOME/gtkmm,johne53/MB3Gtkmm,johne53/MB3Gtkmm