K 10
svn:author
V 3
mbr
K 8
svn:date
V 27
2006-09-29T07:33:56.000000Z
K 7
svn:log
V 227
MFC rev. 1.58, 1.59

If /dev/tty gets opened after your controlling terminal has been revoked
you can't call tty_clone afterwords. This can be done in ctty_clone by
returning with *dev = ctty.

Reviewed by:	jhb
Approved by:	re

END