Add a -N option for use with utilities. This takes a VSM filename as argument, and will also disable the abandonment checks.

This allows reading a stale VSM file (e.g. _VSM.keep saved from a
panic) for forensics gathering.

understandable bits.

decision point.

Document and be consistent about how log statements are printed.

Make the dispatch-reported data be of struct VSL_transactions, and
move the transaction metadata there.

Add a verbose option.