$NetBSD: patch-vis_Makefile,v 1.1 2016/03/30 08:48:32 jperkin Exp $

Use PKGMANDIR.

--- vis/Makefile.orig	2005-07-05 19:24:17.000000000 +0000
+++ vis/Makefile
@@ -2,7 +2,7 @@
 #	@(#)Makefile	8.1 (Berkeley) 6/6/93
 
 BINDIR=${PREFIX}/bin
-MANDIR=${PREFIX}/man
+MANDIR=${PREFIX}/${PKGMANDIR}
 CPPFLAGS+= -I${.CURDIR}/..
 PROG=	vis
 SRCS=	vis.c foldit.c libvis.c