$OpenBSD: patch-configure_d_config_os_progs,v 1.3 2016/05/12 22:00:14 sthen Exp $

target_os contains the first number of the OS version number,
which is a poor thing to use on OpenBSD.

--- configure.d/config_os_progs.orig	Thu May 12 22:19:21 2016
+++ configure.d/config_os_progs	Thu May 12 22:19:30 2016
@@ -184,7 +184,7 @@ AC_SUBST(NON_GNU_VPATH)
 #
 AC_CANONICAL_TARGET
 changequote(, )
-PARTIALTARGETOS=`echo $target_os | sed 's/[-._].*//'`
+PARTIALTARGETOS=`echo $target_os | sed -e 's/[-._].*//' -e 's/openbsd[0-9]/openbsd/'`
 changequote([, ])
 AC_MSG_CACHE_ADD(Building for:               $PARTIALTARGETOS)