Change ssl.c API to include an lprintf callback function for proper logging.

The JS objects will still log to the terminal server (regardless of which server created/used the objects) however - so that's still a TODO.
Change do_cryptInit() to return bool, since it does.
Log detailed error if pthread_once() call fails.
Lowered-severity (to DEBUG) the log messages related to TLS private key and cert creation and destruction.

FIrst commit from within MSVS, so this might look weird.