[PATCH v2] configure: force new xproto version dependency

[Alan Coopersmith]

Since _X_NORETURN is used in the os.h header that gets installed as
part of the SDK, shouldn't the xorg-server.pc also list a Requires:
on the new version?   (Hopefully packagers would enforce the requirement
in their packaging system, but it may still help catch people who have
installed a newer xorg server and then try building drivers with
older x11proto headers installed.)

-- 
	-Alan Coopersmith-        alan.coopersmith at oracle.com
	 Oracle Solaris Platform Engineering: X Window System