8th alpha


http://www.steamdraw.homepage.t-online.de/PanelApp.lha


While experimenting with D&D on my custom Ambient build I had both MUIA_Window_HasAlpha disabled and broke the basic AppWindow support for public Ambient builds.
Both should be fixed now.

I alse nicked some code from geit's PixelCross to give PanelApp a proper version string.
PanelPrefs won't get that treatment as it is really just a small launcher for the mcc and will eventually be obsolete.

D&D into PanelPrefs will also work again once the mcc it called from Ambient instead of the stand alone app, hence no need to add the special AppWindow code here.