new: boilerplate code for a new statefull parser "TLS"
new: decode TLS records
new: save some cryptographic material from TLS handshake
WIP: decode master secret
chg: decrypt the records.

First HTTPS socket decrypted successfully \o/
new: small tool to convert from guile to ip_addr
new: keyfile management from guile (but still unused)
fix: 2 warnings from guile compiler (among hundreds)
chg: use keyfile to decrypt content
new: test for TLS parser
new: actually calls TLS subparser

note: tls.out does not show HTTP query due to the way we call the pkt
subscribers (ie. its called after the first time the HTTP parser is called,
but the query is then incomplete).
fix: handling of (very) short packet on HTTP command
fix: rework streambuf to allow restart in the future
fix: ignore temp test results
fix: give a second chance to parsers setting restart within uncaptured bytes
fix: PIPI test wrt. TLS
chg: more debug msgs
fix: simpler (and better) streambuf_add

Notice how we now utterly embrace the new paradigm of parsing NULL
when a gap occur.
new: handle password for PEM files
fix: way_2_str is gone