Using CURLOPT_POST without using CURLOPT_POSTFIELDS caused us to strlen()
a NULL pointer. Now, we treat a missing CURLOPT_POSTFIELDS as if there is
no data to send.

made some char * into const char * and I removed the check for size > 0
in the add_buffer function.

Curl_FormFree renamed to Curl_formclean, as it turns out VMS for example
requires all global symbols to be *case insentively* unique! curl_formfree
is a global function we shouldn't touch.

httpreq cleanup fix

removed _REENTRANT define

Uses the Curl_SSLConnect() according to the new return type

corrected the read-callback typecase since FILE * was replaced with void *

Remade resume stuff to keep data in the connectdata struct instead of the
main handle struct to work with persistant connections

use GMT for the conditional timed gets (reported by Phil Karn)

Edin Kadribaic's bug report #408488 forced a rearrange of two struct fields
from urldata to connectdata, quite correctly.

remake Host: for each connection and it'll work with proxies too

"Transfer-Encoding: chunked" support added

enable persistant connections by default

Curl_http() could crash on connection re-use

remade the port number stuff so that following locations work and doing
intermixed HTTP and FTP persistant connections also work!

we only allocate the HTTP struct if we need to

moved the dynamicly set pointers to the connectdata struct

corrected memory leaks when re-using connections

multiple connection support initial commit

moved the protocol-specific free to allow easier multiple transfers

GetLine() didn't properly act on -1 lengths returned from Curl_read()

curl_read() and Curl_read() now have ssize_t in the last argument

HTTP PUT resume now sends Content-Range: headers as I believe the RFC2616
describes, Bob Schader's research seems to agree.

Resume is now done with a Content-Range header instead of a Range header if
the request isn't GET. Presumably, this is how it should be made.

Made it possible to do "upload resume" over HTTP