[dcc2] MultiFile Transfer Headers

[codemastr]

> the only thing of use out of all of this is the BINARY/TEXT flag.
>
> This has use over all systems as we could do similar to in ftp, and have
(auto detected) text mode or binary mode transfers, text mode transfers
interpreting linefeeds on the target system so that we dont end up with text
files sent with 'weird' linefeeds (e.g. seeing \r\n linefeeds on a \n\r
system)...

Yeah, a binary/text might be nice, but it's unnecessary as a seperate
feature. In my mind, the content-type feature could handle it. Meaning, you
have text/something-here, then it's text. Otherwise, it's binary.

-- codemastr