$NetBSD: patch-ac,v 1.3 2013/03/06 11:06:56 obache Exp $

Avoid to install of document files of sigscheme, conflict with lang/sigscheme.

--- sigscheme/doc/Makefile.in.orig	2012-12-30 06:12:16.000000000 +0000
+++ sigscheme/doc/Makefile.in
@@ -210,7 +210,7 @@ build_vendor = @build_vendor@
 builddir = @builddir@
 datadir = @datadir@
 datarootdir = @datarootdir@
-docdir = @docdir@
+docdir = 
 dvidir = @dvidir@
 exec_prefix = @exec_prefix@
 host = @host@