Use fullscreen-shell.xml from wayland-protocols

Use the fullscreen-shell protocol XML from the wayland-protocols
installation, and remove the one we provide ourself.

Signed-off-by: Jonas Ådahl <jadahl@gmail.com>
Reviewed-by: Mariusz Ceier <mceier+wayland@gmail.com>
Acked-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
diff --git a/configure.ac b/configure.ac
index e5afbc0..0c3c840 100644
--- a/configure.ac
+++ b/configure.ac
@@ -181,6 +181,10 @@
 PKG_CHECK_MODULES(LIBINPUT_BACKEND, [libinput >= 0.8.0])
 PKG_CHECK_MODULES(COMPOSITOR, [$COMPOSITOR_MODULES])
 
+PKG_CHECK_MODULES(WAYLAND_PROTOCOLS, [wayland-protocols >= 0.1.0],
+		  [ac_wayland_protocols_pkgdatadir=`$PKG_CONFIG --variable=pkgdatadir wayland-protocols`])
+AC_SUBST(WAYLAND_PROTOCOLS_DATADIR, $ac_wayland_protocols_pkgdatadir)
+
 AC_ARG_ENABLE(wayland-compositor, [  --enable-wayland-compositor],,
 	      enable_wayland_compositor=yes)
 AM_CONDITIONAL(ENABLE_WAYLAND_COMPOSITOR,