Turn off the dvdrom target by default. dvd1.iso is now built by

specifying 'WITH_DVD=1' during 'make release'.

This caused some problems during the freebsd-update builds for
10.0-BETA4.

MFC after:	3 days
Sponsored by:	The FreeBSD Foundation

release/Makefile

@@ -20,7 +20,7 @@
 #  NOPORTS:  if set, do not distribute ports tree
 #  NOSRC:    if set, do not distribute source tree
 #  NODOC:    if set, do not generate release documentation
-#  NODVD:    if set, do not generate dvd1.iso
+#  WITH_DVD: if set, generate dvd1.iso
 #  TARGET/TARGET_ARCH: architecture of built release 
 #
 
@@ -79,7 +79,7 @@ IMAGES=
 .if exists(${.CURDIR}/${TARGET}/mkisoimages.sh)
 RELEASE_TARGETS+= cdrom
 IMAGES+=	disc1.iso bootonly.iso
-. if !defined(NODVD)
+. if defined(WITH_DVD)
 RELEASE_TARGETS+= dvdrom
 IMAGES+=	dvd1.iso
 . endif

share/man/man7/release.7

@@ -24,7 +24,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd November 18, 2013
+.Dd December 2, 2013
 .Dt RELEASE 7
 .Os
 .Sh NAME
@@ -230,10 +230,6 @@ When set,
 will prevent the
 .Fa doc.txz
 distribution package from being created.
-.It Va NODVD
-Set to a non-empty value to skip the
-.Cm dvdrom
-target.
 .It Va NOPORTS
 Set to a non-empty value to skip the
 .Li ports/
@@ -245,6 +241,10 @@ will prevent the
 distribution package from being created.
 Setting this also sets
 .Va NODOC .
+.It Va WITH_DVD
+Set to a non-empty value to include the
+.Cm dvdrom
+target.
 .El
 .Sh MAKEFILE TARGETS
 The release makefile