$NetBSD$

Add flags for gnulib.

--- src/Makefile.am.orig	2009-03-02 02:02:18.000000000 +0000
+++ src/Makefile.am
@@ -1 +1,3 @@
+AM_CPPFLAGS = -I$(top_builddir)/lib -I$(top_srcdir)/lib
+
 EXTRA_DIST = builtins.c compat.c compat.h times.c