False-positive on journal corruption check w/multi-line journal entries.
The journal corruption preflight check in p4d_base will erroneously
indicate that corruption exists if the arbitrary 10000 line cutoff
for the test journal file happens to split a multi-line journal entry.
In that case, the first line of the test journal file will look
something like this:
@ @@ @sfo-edge1@ 1
We need journal corruption preflight to be savvy with regard to
multi-line journal entries.