During compilation gdu looks for several UDisks dbus xml files. However
it looks for them in system root and not in sysroot, failing if those
don't exist. Fix that.
Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Signed-off-by: Koen Kooi <koen@dominion.thruhere.net>