Fix compiler warning

Provide some error tracing and fix execl() calling.

Ensure test harness fake_ntlm main function can properly handle arguments.

Use fake_ntlm absolute filename in NTLM_AUTH environment variable for test
2005 definition.

Also, set the test number in the test data file so fake_ntlm can
be reused in future tests.

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

"test -e" is POSIX but clearly was not supported by the SunOS sh
version, -f is supported and should be a decent equivalent

Bug: http://curl.haxx.se/bug/view.cgi?id=3371574

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

Log texts also modified and some white space edits

Upgrade ILE/RPG binding to 7.21.7.
Update OS400 documentation accordingly.

We should probably also make sure that [protocol]_proxy for all possible
protocols libcurl supports are unset.

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.

First, the -J/--remote-header-name was wrongly sorted in the --help
output as pointed out in bug report #3349271.

Then, I changed the format of the texts to follow the man page better in
that it now uses "-A, --long" intead of "-A/--long". I also made all
additional arguments get written as in "-A, --long FILENAME" instead of
the previous "<filename>" style.

Reported by: Herve Amblard
Bug: http://curl.haxx.se/bug/view.cgi?id=3349271