fix building on a clean machine (broken due to changes in postconf) -

reported by nigel@, ok Brad.

mail/postfix/Makefile.inc

@@ -1,4 +1,4 @@
-# $OpenBSD: Makefile.inc,v 1.81 2011/05/09 21:56:13 sthen Exp $
+# $OpenBSD: Makefile.inc,v 1.82 2011/11/13 16:20:00 sthen Exp $
 
 COMMENT=	fast, secure sendmail replacement
 
@@ -98,7 +98,7 @@ do-configure:
 
 do-install:
 	${INSTALL_DATA_DIR} ${PREFIX}/share/examples/postfix
-	@(cd ${WRKSRC}; sh postfix-install \
+	@(cd ${WRKSRC}; env SYSCONFDIR=${SYSCONFDIR} sh postfix-install \
 		-non-interactive \
 		mail_owner=_postfix \
 		setgid_group=_postdrop \

mail/postfix/snapshot/Makefile

@@ -1,6 +1,7 @@
-# $OpenBSD: Makefile,v 1.226 2011/11/10 17:27:09 sthen Exp $
+# $OpenBSD: Makefile,v 1.227 2011/11/13 16:20:00 sthen Exp $
 
 VERSION=	2.9-20111109
+REVISION=	0
 
 MASTER_SITES=	${MASTER_SITE_POSTFIX:=experimental/}
 

mail/postfix/snapshot/patches/patch-postfix-install

@@ -0,0 +1,12 @@
+$OpenBSD: patch-postfix-install,v 1.1 2011/11/13 16:20:00 sthen Exp $
+--- postfix-install.orig	Sun Nov 13 17:01:04 2011
++++ postfix-install	Sun Nov 13 17:01:20 2011
+@@ -363,7 +363,7 @@ HTML files. Specify \"no\" if you do not want to insta
+ 
+ : ${install_root=/}
+ : ${tempdir=`pwd`}
+-: ${config_directory=`bin/postconf -h -d config_directory`}
++: ${config_directory=`bin/postconf -h -d config_directory || echo ${SYSCONFDIR}/postfix`}
+ 
+ # Find out the location of installed configuration files.
+