Adding tests for GContentType
Work on the implementation of GContentType
Correcting a typo
Work on the documentation of GtkMenuItem
Correcting a typo
Implementing gtk-icon-set-new-from-pixbuf
Correcting a typo
Adding a demo Application Window to the Gtk+ Demo for Lisp
C orrecting the example UI definition
Work on the documentation of GdkPixbufLoader
Adding the documentation of g-content-get-generic-icon-name
The function gtk-action-group-get-accel-group and
gt-action-group-set-accel-group are present since Gtk 3.6
Call %gtk-main and not gtk-main
Use gtk-dialog-run to implement the message dialog
Some work on the testsuite

The testsuite runs with SBCL and CCL on Linux without problems.
Correcting two typos
Some work on the demo for an application window.
Rework the implemenation of ensure-gtk-main.

This implementation works on Linux and Windows, but it is not clear what
the best implementation would be.
Correcting a typo
Some work on the documentation