- updated to 3.8
- reenabled updated link patch (fixes libgpsd linking, kills whole rpath stuff)
- added flags patch (add dbus pkgconfig flags also for static library build)
- added destdir patch (DESTDIR support for udev-install target)
- use scons [udev-]install, but ensure that build and install environments are
  identical and rpaths are not used (they caused DESTDIR-poisoned relinking on install)