add better description

package/tar/Makefile

@@ -7,7 +7,7 @@ PKG_NAME:=		tar
 PKG_VERSION:=		1.25
 PKG_RELEASE:=		1
 PKG_MD5SUM:=		0e48e9e473a72f135d0ebbc8af2762cc
-PKG_DESCR:=		GNU tar
+PKG_DESCR:=		GNU archiving application
 PKG_SECTION:=		archive
 PKG_URL:=		http://mirrors.kernel.org/gnu/tar/
 PKG_SITES:=		http://mirrors.kernel.org/gnu/tar/