xserver_xorg-server: bump version, improve option support

Later version of xserver no longer need configure hack to say where
mesa3d is located.

Signed-off-by: Will Wagner <will_wagner@carallon.com>
Acked-by: Paulius Zaleckas <paulius.zaleckas@gmail.com>
Acked-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>