Document MAKE_DVD and xref svn in ports.

Approved by:	re@ (kib)

share/man/man7/release.7

@@ -24,7 +24,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd November 12, 2006
+.Dd August 17, 2009
 .Dt RELEASE 7
 .Os
 .Sh NAME
@@ -332,6 +332,10 @@ patch file.
 A script that will be run in the
 .Xr chroot 8
 environment immediately after any local patches are applied.
+.It Va MAKE_DVD
+If defined, build a bootable ISO DVD image in the CD-ROM
+stage directory.
+This option may not be available for all architectures.
 .It Va MAKE_ISOS
 If defined, bootable ISO CD-ROM images will be created from the
 contents of the CD-ROM stage directory.
@@ -503,6 +507,7 @@ make release CHROOTDIR=/local3/release BUILDNAME=6.0-CURRENT \\
 .Xr install 1 ,
 .Xr make 1 ,
 .Xr patch 1 ,
+.Xr svn 1 Pq Pa ports/devel/subversion-freebsd ,
 .Xr uname 1 ,
 .Xr md 4 ,
 .Xr make.conf 5 ,
@@ -540,7 +545,7 @@ effort was spent getting
 into a shape where it could at least automate most of the tediousness
 of building a release in a sterile environment.
 .Pp
-With its almost 1000 revisions spread over multiple branches, the
+At near 1000 revisions spread over multiple branches, the
 .Xr cvs 1
 log of
 .Pa src/release/Makefile