Update to 1.6

-a option means create new jail from archive file of jail-aaa.
Search of /usr/jails/archive selected incorrect archive file.
If archive files named jail-aaa, jail-aaa-bbb, jail-aaa-bbb-ccc were present
jail-aaa-bbb-ccc was always selected incorrectly.
This same logic was also used for 'qjail restore jail-aaa', but that logic
had check for this condition that told user to use full archive name that
included the date stamp archive was created. Fixed logic in both functions.

PR: ports/171724
Submitted by: maintainer (Joe Barbish <qjail@a1poweruser.com>)