When an easy handle is used to download an URI which has no
Content-Length header (or equivalent) after downloading an URI which
does, the value from the previous transfer is reused and returned by
CURLINFO_CONTENT_LENGTH_DOWNLOAD. This is because the progress flags
(used to determine whether such a header was received) are not reset
between transfers.

Bug: http://curl.haxx.se/bug/view.cgi?id=3370895

When libcurl has said to the server that there's a POST or PUT coming
(with a content-length and all) it has to either deliver that amount of
data or it needs to close the connection before trying a second request.

Adds test case 1129, 1130 and 1131

The bug report is about when used with 100-continue, but the change is
more generic.

Bug: http://curl.haxx.se/mail/lib-2011-06/0191.html
Reported by: Steven Parkes

Bug: http://curl.haxx.se/mail/lib-2011-07/0109.html

With the use of the 'ntlm_auth' tool from the Samba project

Bug: http://curl.haxx.se/mail/lib-2011-07/0074.html
Reported and fix suggested by: Ben Greear

gssapi.h is used as a header name by Heimdal-style GSSAPI so it would
conflict with a private header using that name, and while renaming the
header I figured we should name the .c file accordingly as well.

Bug: http://curl.haxx.se/mail/lib-2011-07/0071.html
Reported by: Ben Greear

Modern gcc versions (4.6.X) get more picky by default and have started
to warn for unused parameters, but luckily gcc also allows us to mark
them as unused so that we can avoid the warnings.

Removed the parameters that were common to all our invocation.

This function wraps our calls to gss_init_sec_context so that we
have a unified way to talk to GSSAPI.

This change makes this callsite match the rest of the code.

We use "if(condition) {" with a space between the close paren and the
open brace.

Previously it would access a NULL pointer and die.

Bug: http://curl.haxx.se/mail/lib-2011-06/0170.html
Reported by: Christian Hagele

This is a security flaw. See curl advisory 20110623 for details.

Reported by: Richard Silverman

Some servers, e.g. mail.bezeqint.net:110, consider it a syntax error

compiler warning: conditional expression is constant

compiler warning: variable is initialized but not referenced

adding unit test for Curl_llist_move, documenting unit-tested functions
in llist.c, changing unit-test to unittest, replacing assert calls with
abort_unless calls

The CURLFORM_STREAM is documented to only insert a file name (and thus
look like a file upload) in the part if CURLFORM_FILENAME is set, but in
reality it always inserted a filename="" and if CURLFORM_FILENAME wasn't
set, it would insert insert rubbish (or possibly crash).

This is now fixed to work as documented, and test 554 has been extended
to verify this.

Reported by: Sascha Swiercy
Bug: http://curl.haxx.se/mail/lib-2011-06/0070.html

Properly deal with the fact that the last fread() call most probably is
a short read, and when using callbacks in fact all calls can be short
reads. No longer consider a file read done until it returns a 0 from the
read function.

Reported by: Aaron Orenstein
Bug: http://curl.haxx.se/mail/lib-2011-06/0048.html

If a piece is set to use a callback to get the data, it should not be
treated as data. It unfortunately also requires that curl_easy_perform()
or similar has been used as otherwise the callback function hasn't been
figured out and curl_formget won't know how to get the content.

Typecast when converting to int from long to avoid some compiler warnings

The test code that was #ifdef'ed in the code was converted into unit
tests in test case 1309. I also removed the #if 0'ed code from splay.c

With "@unittest: [num]" in the header comment for each tested function.
Shows we have a log way to go still...

When closing a connection, the speedchecker's timestamp is now deleted
so that it cannot accidentally be used by a fresh connection on the same
handle when examining the transfer speed.

Bug: https://bugzilla.redhat.com/679709

When a time condition isn't met, so that no body is delivered to the
application even though a 2xx response is being read from the server, we
must close the connection to avoid a re-use of the connection to be
completely tricked.

Added test 1128 to verify.

Typecasts added since I changed more code to use long for timeouts

It was mostly typecasted to int all over the code so switching to long
instead all over should be a net gain.