C++ wrappers for libpanelappletmm

Any help is welcomed.  File bugs with patches (see http://www.gtkmm.org/bugs.shtml for patching procedure), and give suggestions.

Don't know what to do??  Please read TODO!

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Why do you pass a PanelApplet* in your factory slot?  Wouldn't it be easier to wrap it
and then pass it?
  This was a design decision that I (Bryan) had to make.  When I was making the first example
(with the slot passing the C++ wrapped PanelApplet*), I had to figure out how to convert that
to create my own applet object using my class.  I ended up having my child class's (MyApplet)
constructor take a PanelApplet* and pass it to the Gnome::Panel::Applet constructor.  I feel
this is the easiest way to do this and the most straightforward approach.  If you have any
questions about this, please see the simple example.
