Log Message:
Import xf86driproto-2.0.2 from pkgsrc-wip.
This provides the XF86DRI extension headers from modular X.org X11
project.

The headers contain the types and functions that define the interface
between a DRI (direct rendering infrastructure) driver and driver
loader.

XXX The dependency on glproto and libdrm reflect the includes of the
packages and should be checked by configure.