K 10
svn:author
V 6
kevans
K 8
svn:date
V 27
2018-11-01T14:00:56.015483Z
K 7
svn:log
V 236
libbe(3): Don't promote non-cloned BEs

Most easily reproducible by attempting to activate the currently activated
BE, one would get a "not a cloned filesystem" error instead of success or a
sane message.

PR:		232488
MFC after:	3 days

END