IFS compilation support, SSL GSKit backend by default, TLSv1.[12] support in
  GSKit for OS400 >= V7R1, no more tabs in make scripts.

Clarify in the documentation that DNS entries added with CURLOPT_RESOLVE
won't time-out.

Bug: http://curl.haxx.se/mail/lib-2013-10/0062.html
Reported-by: Romulo Ceccon

...and fixed up test869 as DIGEST-MD transcript is as follows:

S: Challenge
C: Authentication String
S: Continue Response
C: Empty String

error: unused variable 'table16'

cyassl/ctaocrypt/types.h needs SIZEOF_LONG_LONG

Reported-by: Chris Conlon

Plain strings after glob ranges/lists weren't treated correctly but
caused broken URLs to get used.

Reported-by: Javier Barroso

From wikipedia:

Travis CI is a hosted, distributed continuous integration service used
to build and test projects hosted at GitHub.

Travis CI is configured by adding a file named .travis.yml, which is a
YAML format text file, to the root directory of the GitHub repository.

Travis CI automatically detects when a commit has been made and pushed
to a GitHub repository that is using Travis CI, and each time this
happens, it will try to build the project and run tests. This includes
commits to all branches, not just to the master branch. When that
process has completed, it will notify a developer in the way it has been
configured to do so — for example, by sending an email containing the
test results (showing success or failure), or by posting a message on an
IRC channel. It can be configured to run the tests on a range of
different machines, with different software installed (such as older
versions of a programming language, to test for compatibility).

... if not already initialized.  This fixes a regression introduced by
commit 4ad8e142, which caused test619
to intermittently fail on certain machines (namely Fedora build hosts).

I noted a missing text for exit-code 89 in docs/curl.1

Patch-by: Oliver Kuckertz
Bug: http://curl.haxx.se/bug/view.cgi?id=1292

...and corrected response when check fails from 500 to -ERR.

Changed the failure code when TLS v1.1 and v1.2 is requested but not
supported by older OpenSSL versions, following review from libcurl
peers, and reduced the number of required preprocessor if statements.

...with the use of CURL_SSLVERSION_TLSv1_1 and CURL_SSLVERSION_TLSv1_2
being conditional on OpenSSL v1.0.1 as the appropriate flags are not
supported under earlier versions.

Commit ad34a2d5 relies on definitions that are only present in
OpenSSL v1.0.1 and up. This quick fix allows the builds that use
older versions of OpenSSL to continue building.

Bug: http://sourceforge.net/p/curl/bugs/1291
Reported-by: David Walser

According to the documentation for libssh2_userauth_list(), a NULL
return value is not necessarily an error. You must call
libssh2_userauth_authenticated() to determine if the SSH_USERAUTH_NONE
request was successful.

This fixes a segv when using sftp on a server that allows logins with an
empty password. When NULL was interpreted as an error, it would
free the session but not flag an error since the libssh2 errno would be
clear. This resulted in dereferencing a NULL session pointer.

Signed-off-by: Tyler Hall <tylerwhall@gmail.com>