Convert Megatunix32*.iss.in to use MXE build of GTK+. fix runaway
timeouts for dash and 2d tables
Post install script for windows self installers that tkes care of setting up the pango.moduels and gdk-pixbuf-loaders cache files.  Without these the these dont work and fonts are square boxes...
commented out debug messages
commented out debug code
fix very minor memory leak
revised build system to use MXE built GTK+