git: Update to 2.1.0
dbus: Don't search for Xlibs if useX11 is false.

This particularily fails when using non-chrooted builds.

Signed-off-by: aszlig <aszlig@redmoonstudios.org>
Merge pull request #3636 from linquize/git-2.1.0

git: Update to 2.1.0