Added tons of comments all over

checkheader() added to check headers+contents instead of the previous
strnequal() approach that really didn't follow the RFC properly

Ingo Wilken's redirect fixes

Ingo Wilken's patch to support multiple spaces after "Location:"

Cris Bailiff's fix to never attempt to get the body of a 304-reply!

When Content-Length:0 is received, we now bail now and return success
directly after all the headers are received!

improved treatment of "Content-Length: 0", which is done by having
maxdownload set to -1 when not used

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

calling curl_easy_perform() with no URL set, now returns an error as
early as possible

bugfixed the Location: following that must've been bad since the persistant
connections were introduced

- disabling port on absolute redirects is wrong
- removed #ifdefed code

better error checks for failure conditions (based on Puneet Pawaia's reports)

make sure the alarm is off when returning from curl_easy_perform()

'Connection: keep-alive' is now understood when sent by a HTTP/1.0 server
as an indication of a persistant connection

DONT TOUCH the data->url as it may point to read-only memory!!!

now always stops reading a HEAD reply after all the headers have been returned
RFC 2616, section 9.4 says: "The HEAD method is identical to GET except that
the server MUST NOT return a messag

now always stops reading a HEAD reply after all the headers have been returned
RFC 2616, section 9.4 says: "The HEAD method is identical to GET except that
the server MUST NOT return a message-body in the response."

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Treat 302-redirects the same way we treat 303-redirects

reset the follow location counter in Curl_perform() so that we can follow
new locations on the same connection that was previously followed on

Added support for HTTP code 100 continue, as 8.2.3 in RFC2616 defines

detect if chunked transfers are aborted

Added a failf() error message when the chunked read returns failure

updated the comment for the chunked reading

Added infof() calls for persistant connection info, we are very likely to
need these at least for debugging 7.7 and probably later as well...

for HTTP/1.0 we default to non keep-alive connections, but when we get a
1.0-reply from a proxy we use and the Proxy-Connection: keep-alive header
is used, we switch it on and live happily ev

for HTTP/1.0 we default to non keep-alive connections, but when we get a
1.0-reply from a proxy we use and the Proxy-Connection: keep-alive header
is used, we switch it on and live happily ever after

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prefix changes curl_ to Curl_
made it work (partly) with persistant connections for HTTP/1.0 replies
moved the 'newurl' struct field for Location: to the connectdata struct