duplicates of all the parsed packet files, but excluding all corrupted packed
messages. The recovered packet files are named *.recovered.
Also improved the corrupted packed message header detection to make this
feature more useful.
Created at the request of Nelgin who promises to test and use, for better or
for worse, in sickness and in health, from this day forward, yadda yadda yadda.

Fix GCC warning: field precision specifier ‘.*’ expects argument of type ‘int’, but argument 3 has type ‘long unsigned int’ [-Wformat=]

size_t.

Print wanring if type 2+ orig/dest zones don't match the zone fields in the
type-2 portion of the header.
Updated some pkt header field names in fidodefs.h.

header fields, not just the filler portion) - much more sane.

Display the packet password, if one was specified.