$NetBSD: patch-configure,v 1.3 2015/03/06 21:03:20 ryoon Exp $

Expand variable where it's defined

--- configure.orig	2015-02-24 18:17:38.000000000 +0000
+++ configure
@@ -814,7 +814,7 @@ sharedstatedir='${prefix}/com'
 localstatedir='${prefix}/var'
 includedir='${prefix}/include'
 oldincludedir='/usr/include'
-docdir='${datarootdir}/doc/${PACKAGE_TARNAME}'
+docdir='${datarootdir}/doc/'"${PACKAGE_TARNAME}"
 infodir='${datarootdir}/info'
 htmldir='${docdir}'
 dvidir='${docdir}'