MFC r279081:
Allow parameters listed on the command line to override the -v option,
instead of crashing.
MFC r279083:
Fix the logic for skipping parameters (with -s) that have "jailsys"
parents (such as host.hostname); these were being skipped all the time.
That it went this long without anyone noticing is a sign that this feature
isn't actually used by anyone, but it's there so it might as well work.
MFC r279123:
Allow for parameters added with the JP_OPT flag to not exist.
That's why the flag exists in the first place.
git-svn-id: svn://svn.freebsd.org/base/stable/9@285344
ccf9f872-aa2e-dd11-9fc8-
001c23d0bc1f