Change default permission of /var/mail to 01777, because

MUA must have s-bit in other case (security hole).
This fix needed for procmail too, because procmail
uses NFS-locks in /var/mail directory

etc/mtree/BSD.var.dist

@@ -1,4 +1,4 @@
-#	$Id$
+#	$Id: BSD.var.dist,v 1.9 1994/02/15 10:38:50 rgrimes Exp $
 #
 
 /set type=dir uname=bin gname=bin mode=0755
@@ -24,8 +24,6 @@ db
 ..
 log
 ..
-mail
-..
 msgs
 ..
 preserve
@@ -63,7 +61,8 @@ spool
 /set type=dir uname=bin gname=bin mode=0755
 tmp	mode=01777
 ..
-
+mail
+..
 /set type=file uname=games gname=bin mode=0755
 games	type=dir
 	hackdir	type=dir