for AC_DEFINE_DIR macro
i18n support
Added dbus applet icons
Added gettext-generated localized panel-applet files
Added icons for dbus applets
Updated dbus applet files
Updated mate naming
Updated xfce4 required version and naming
Fixed xfce4 build target test
XFCE4 panel plugin support
Now builds multiple packages for each target (currently mate & xfce4)
Added XFCE >= 4.7 panel plugin sources