Sort options.
Fix wrong name for --debug-file.
Add --debug-rotate-max.

Also rescope long option enum and use a safe starting value.
Makeflow's --debug-rotate-max doesn't alias -O.
(Re-)Add node id symbol tags to makeflow log.

As requested by Jerome Mariette, some pbui scripts need SYMBOL
information to parse makeflow logs. This commit makes such information
available on request (--log-verbose)
Bump to 4.2.2