Added --b64 command to output the B64 Destination of a public OpenPGP keyring
Fixed usage text
Rework OpenPGP reading methods to allow InputStreams
--b64 command - read public keyring from file or stdin
lookup.sh (for use with ExecNamingService)
Rewrite to enable OpenPGP output to stdout
Request passphrase where needed, and on stderr to not interfere with stdout