fix rebuild, when mostlyclean fails

git-svn-id: svn://svn.openwrt.org/openwrt/trunk/openwrt@1148 3c298f89-4303-0410-b956-a3cf2f4a3e73

package/rules.mk

@@ -28,7 +28,8 @@ $(2)-clean:
 	rm -f $$(IPKG_$(1))
 clean: $(2)-clean
 mostlyclean:
-rebuild: mostlyclean
+rebuild:
+	-$(MAKE) mostlyclean
 	if [ -f $(PKG_BUILD_DIR)/.built ]; then \
 		$(MAKE) clean; \
 	fi
@@ -64,7 +65,6 @@ $(PKG_BUILD_DIR)/.built: $(PKG_BUILD_DIR)/.configured
 $(PACKAGE_DIR):
 	mkdir -p $@
 
-
 clean: 
 	rm -rf $(PKG_BUILD_DIR)