Make tkdiff work again by stealing the post-patch stanza from tkcvs and

apply it here to deal with wish correctly.

Reviewed by:	kevlo@

textproc/tkdiff/Makefile

@@ -3,6 +3,7 @@
 
 PORTNAME=	tkdiff
 PORTVERSION=	4.2
+PORTREVISION=	1
 CATEGORIES=	textproc tk
 MASTER_SITES=	SF
 
@@ -19,6 +20,10 @@ NO_BUILD=	yes
 
 PLIST_FILES=	bin/tkdiff
 
+post-patch:
+	${FIND} ${WRKSRC} -type f | ${XARGS} \
+		${REINPLACE_CMD} -e '/^exec wish/s|wish|${WISH}|g' -e '/^exec tclsh/s|tclsh|${TCLSH}|g'
+
 do-install:
 	@${INSTALL_SCRIPT} ${WRKSRC}/tkdiff ${STAGEDIR}${PREFIX}/bin