Add migration tools

Author: clefebvre

debian/xapps-common.install

@@ -2,6 +2,7 @@ usr/share/glib-2.0/schemas
 usr/bin/
 usr/share/icons
 usr/share/locale
+usr/share/xapp
 usr/libexec/xapps/*.py
 usr/share/mate-panel/applets
 usr/share/dbus-1/services