for what HTTP request that is being used. The old bit-style fields are still
in there as well.

GET resume. Other resumes are upload-wise and don't care about this header
in the download stream

unfolded telwrite() instead of being a separate single function

Curl_write() and Curl_read() are here

Some functions changed prototype due to this change as well.

socket. Curl_ConnectHTTPProxyTunnel changed prototype.

added lots of explaining comments

curl will return an error when such an address is used.

globbing, it makes IPv6 support easier and smoother to add.