* 'topic/jgras/base64-logging' of https://github.com/J-Gras/bro:
Update calls of Base64 functions.
Refactoring of Base64 functions.
I've removed the additional bif for encoding with a connection, as I'm
not sure there's much of a use case for it; we can always add it back
later if it turns out there is. I've also renamed
decode_base64_intern() to decode_base64_conn() to be a bit more
explicit about the difference.