contrib: add Xau

contrib/src/xau/SHA512SUMS

+0aabe5c52b02208ee5c4ebb189f425e0bac16d2aec9ab00347349312bbf02240fb3bd28c17232f98f88178dda1aed2b9a7f33cc8ec067065dd58526ca978c340  libXau-1.0.6.tar.bz2

contrib/src/xau/rules.mak

+XAU_VERSION := 1.0.6
+
+ifeq ($(call need_pkg,"xau"),)
+PKGS_FOUND += xau
+endif
+
+.sum-xau: libXau-$(XAU_VERSION).tar.bz2
+
+libxau: libXau-$(XAU_VERSION).tar.bz2 .sum-xau
+	$(UNPACK)
+	$(MOVE)
+
+.xau: libxau
+	$(RECONF)
+	cd $< && $(HOSTVARS) ./configure $(HOSTCONF) --enable-xthreads
+	cd $< && $(MAKE) install

contrib/src/xcb/rules.mak

@@ -42,6 +42,8 @@ XCBCONF := \
 	--disable-xvmc \
 	$(HOSTCONF)
 
+DEPS_xcb = xau $(DEPS_xau)
+
 .xcb: libxcb
 	cd $< && $(HOSTVARS) ./configure $(XCBCONF)
 	cd $< && $(MAKE) install