Add serialization/deserialization log messages. (#1518)
Add serialization/deserialization log messages. (#1518)

* Add serialization/deserialization log messages.

Note that these log messages are currently "invisible" as there is no
verbosity level that includes "manticore.util.helpers" in log.py.  These
log messages will be made visisble by a subsequent commit.

* Handle nameless files.

* Typo

trailofbits/manticore,trailofbits/manticore,montyly/manticore,montyly/manticore,trailofbits/manticore