MFC r268022: Rename the WITHOUT_VT_SUPPORT knob to WITHOUT_VT

The _SUPPORT knobs have a consistent meaning which differs from the
  behaviour controlled by this knob.  As the knob is opt-out and has not
  appeared in a release the impact should be low.

UPDATING

@@ -16,6 +16,11 @@ from older versions of FreeBSD, try WITHOUT_CLANG to bootstrap to the tip of
 stable/10, and then rebuild without this option. The bootstrap process from
 older version of current is a bit fragile.
 
+20140708:
+	The WITHOUT_VT_SUPPORT kernel config knob has been renamed
+	WITHOUT_VT.  (The other _SUPPORT knobs have a consistent meaning
+	which differs from the behaviour controlled by this knob.)
+
 20140608:
 	On i386 and amd64 systems, the onifconsole flag is now set by default
 	in /etc/ttys for ttyu0. This causes ttyu0 to be automatically enabled

share/Makefile

@@ -86,7 +86,7 @@ _syscons=	syscons
 _tests=		tests
 .endif
 
-.if ${MK_VT_SUPPORT} != "no"
+.if ${MK_VT} != "no"
 _vt=		vt
 .endif
 

share/mk/bsd.own.mk

@@ -358,7 +358,7 @@ __DEFAULT_YES_OPTIONS = \
     UNBOUND \
     USB \
     UTMPX \
-    VT_SUPPORT \
+    VT \
     WIRELESS \
     WPA_SUPPLICANT_EAPOL \
     ZFS \