change "foo.h" to <X11/foo.h> for core headers, e.g. X.h, Xpoll.h;
change "foo.h", "extensions/foo.h" and "X11/foo.h" to
<X11/extensions/foo.h> for extension headers, e.g. Xv.h;
change "foo.[ch]" to <X11/Xtrans/foo.[ch]> for Xtrans files.
xc/programs/Xserver/hw/xfree86/os-support/linux/lnx_io.c
//bugs.freedesktop.org/show_bug.cgi?id=825) attachment #956
(https://bugs.freedesktop.org/attachment.cgi?id=956): Fix build
problems on Linux/SPARC. Patch by Jeremy Huddleston
<eradicator@gentoo.org>. Approved in the 2005-01-31 Xorg
release-wranglers phone call.