K 10
svn:author
V 6
kevans
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svn:date
V 27
2018-08-23T01:45:18.809721Z
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svn:log
V 514
bectl(8): jail: Tear down jail by default after command exits

Add a -U flag to get back the old behavior. The new behavior is a little
more friendly to the common use cases, jail the BE and execute a script.
Having the jail torn down automatically when the script is finished, or when
you exit the shell, is a little more friendly than having to remember to
`bectl ujail`.

Batch mode (-b) will continue to leave the jail up, as it's assumed the
caller has other intentions.

Submitted by:	Shawn Webb (partially)

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