xz: add xz-utils meta package

utils/xz/Makefile

@@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=xz
 PKG_VERSION:=5.2.1
-PKG_RELEASE:=1
+PKG_RELEASE:=2
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.bz2
 PKG_SOURCE_URL:=http://tukaani.org/xz
@@ -94,6 +94,10 @@ define Build/InstallDev
 		$(1)/usr/lib/pkgconfig/
 endef
 
+define Package/xz-utils/install
+	true
+endef
+
 define Package/liblzma/install
 	$(INSTALL_DIR) $(1)/usr/lib
 	$(CP) $(PKG_INSTALL_DIR)/usr/lib/liblzma.so.* $(1)/usr/lib/