Variable type cleanups to please the picky MIPSPro compiler.

Source cleanups. The major one being that we now _always_ use a Curl_addrinfo
linked list for name resolved data, even on hosts/systems with only IPv4
stacks as this simplifies a lot of code.

pass an int pointer when it expects an int pointer...

The read callback can now return CURL_READFUNC_ABORT to stop a transfer.

Alexander Krasnostavsky fixed a flaw in the 3rd party transfer code that
didn't properly check return code.

Alexander Krasnostavsky's fix to make libcurl build fine with configure
--disable-http, which thus builds a libcurl without HTTP support.

Alexander Krasnostavsky's FTP third party transfer (proxy) support

initial support for "uploading" to file:// URLs

I made Curl_done() take a pointer-pointer in the first argument instead, and
if the connection is killed it blanks the pointer it points to, to make it
easier to detect usage problems whereev

I made Curl_done() take a pointer-pointer in the first argument instead, and
if the connection is killed it blanks the pointer it points to, to make it
easier to detect usage problems whereever Curl_done() is used.

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fixed a warning on IRIX, deleted trailing whitespace

Curl_done() and the protocol-specific conn->curl_done() functions now all
take a CURLcode as a second argument, that is non-zero when Curl_done()
is called after an error was returned from Cu

Curl_done() and the protocol-specific conn->curl_done() functions now all
take a CURLcode as a second argument, that is non-zero when Curl_done()
is called after an error was returned from Curl_do() (or similar).

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even if Curl_do() fails, we must call Curl_done() to do proper cleaning up

use size_t better for buffer and alloc lengths

minor leak in case of error, thanks to "./runtests.pl -n -t 25"

curl_global_init_mem() allows the memory functions to be replaced.
memory.h is included everywhere for this.

prevent warnings when using the gcc option -Wunreachable-code

General HTTP authentication cleanup and fixes

Made host name and proxy name get stored in a 'struct hostname' and set
all things up to work with encoded host names internally, as well as keeping
'display names' to show in debug messages.

Made host name and proxy name get stored in a 'struct hostname' and set
all things up to work with encoded host names internally, as well as keeping
'display names' to show in debug messages. IDN resolves work for me now using
ipv6, ipv4 and ares resolving. Even cookies on IDN sites seem to do right.

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no longer include curl/types.h, it serves no purpose

added many comments

- David Byron found and fixed a small bug with the --fail and authentication
stuff added a few weeks ago. Turns out that if you specify --proxy-ntlm and
communicate with a proxy that req

- David Byron found and fixed a small bug with the --fail and authentication
stuff added a few weeks ago. Turns out that if you specify --proxy-ntlm and
communicate with a proxy that requires basic authentication, the proxy
properly returns a 407, but the failure detection code doesn't realize it
should give up, so curl returns with exit code 0. Test case 162 verifies
this.

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Fix the "lingering close" problem when re-using a connection, as test case
160 shows.

We got no data and we attempted to re-use a connection. This might happen if
the connection was

Fix the "lingering close" problem when re-using a connection, as test case
160 shows.

We got no data and we attempted to re-use a connection. This might happen if
the connection was left alive when we were done using it before, but that was
closed when we wanted to read from it again. Bad luck. Retry the same request
on a fresh connect!

Deleted the sockerror variable again, it serves no purpose anymore.

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Cleaned up hostname/name/gname and path/ppath confusion. Removed the fixed-
length limit of the hostname part of the URL.

remove an long time #defined struct member and use the actual "real" name
instead to make it easier to find/read

getting only a 100 Continue response and nothing else, when talking HTTP,
is now treated as an error by libcurl