The check_library_exists_concat do not check crypt32 library properly.
So include it directly.

Bug: https://github.com/curl/curl/pull/917
Reported-by: Yonggang Luo

Bug: https://github.com/curl/curl/issues/935
Reported-by: Alain Danteny

Didn't work.

This reverts commit 50723585.

CI is failing due to missing libtoolize, so I'm trying this.

merged #931

Do not log compilation informational messages.

Bug: https://curl.haxx.se/mail/lib-2016-07/0070.html
Reported-by: Paul Howarth

As SPNEGO is only defined when these pre-processor variables are defined
there is no need to query them explicitly.

Typo introduced in commit ad5e9bfd.

... and make the distros link a proper link

Embedded manifest option didn't work due to typo.

Reported-by: Stefan Kanthak

This is a follow up to the parent commit dcdd4be3 which fixes one leak
but creates another by failing to free the credentials handle if out of
memory. Also there's a second location a few lines down where we fail to
do same. This commit fixes both of those issues.

This patch allocates memory to "output_token" only when it is required
so that memory is not leaked if function returns.

Follow-up commit to c5098080 to make this test pass.

- Linux TFO + TLS is not implemented yet.

Bug: https://github.com/curl/curl/issues/907

- Curl_ipv6works() is not thread-safe until after the first call, so
call it once during global init to avoid a possible race condition.

Bug: https://github.com/curl/curl/issues/915
PR: https://github.com/curl/curl/pull/918

Closes https://github.com/curl/curl/pull/914

Closes https://github.com/curl/curl/pull/913

Closes https://github.com/curl/curl/pull/911

Explain how some FTP servers support the machine readable listing
format MLSD from RFC 3659 and compare it to LIST.

Ref: https://github.com/curl/curl/issues/906

Closes #892

Closes #896

Reported-by: Gou Lingfeng
Bug: https://curl.haxx.se/mail/lib-2016-06/0139.html

Reported-by: Richard Gray
Bug: https://curl.haxx.se/mail/lib-2016-06/0136.html

- the expression of an 'if' was always true
- a 'while' contained a condition that was always true
- use 'if(k->exp100 > EXP100_SEND_DATA)' instead of 'if(k->exp100)'
- fixed a typo

Closes #889

... as otherwise we could get a 0 which would count as no error and we'd
wrongly continue and could end up segfaulting.

Bug: https://curl.haxx.se/mail/lib-2016-06/0052.html
Reported-by: 暖和的和暖

... as previously the README.cmake would be picked and put at the bottom
of the docs page there and it wasn't very representative!