fix libipq install if staging dir doesn't contain usr/lib and usr/include yet

git-svn-id: svn://svn.openwrt.org/openwrt/trunk/openwrt@959 3c298f89-4303-0410-b956-a3cf2f4a3e73

package/iptables/Makefile

@@ -71,6 +71,7 @@ $(IPKG_IP6TABLES):
 	$(IPKG_BUILD) $(IDIR_IP6TABLES) $(PACKAGE_DIR)
 
 $(STAGING_DIR)/usr/lib/libipq.a: $(PKG_BUILD_DIR)/.built
+	mkdir -p $(STAGING_DIR)/usr/include/ $(STAGING_DIR)/usr/lib/
 	cp -fpR $(PKG_INSTALL_DIR)/usr/include/libipq.h $(STAGING_DIR)/usr/include/
 	cp -fpR $(PKG_INSTALL_DIR)/usr/lib/libipq.a $(STAGING_DIR)/usr/lib/