$NetBSD$

Do not emit errors on warning, to build with ocaml 3.11

--- tools/Makefile.inc.unix.orig	2009-09-06 12:58:26.000000000 +0000
+++ tools/Makefile.inc.unix	2009-09-06 12:58:42.000000000 +0000
@@ -5,8 +5,8 @@
 CAMLP5F=-DUNIX
 CAMLP5D=+camlp5
 LIBUNIX=-cclib -lunix
-OCAMLC=ocamlc.opt -warn-error A
-OCAMLOPT=ocamlopt.opt -warn-error A
+OCAMLC=ocamlc.opt
+OCAMLOPT=ocamlopt.opt
 OCAMLI=
 OCAMLD=
 STRIP=strip
