Similar to how URL decoding/encoding is done, we could have URL
functions to convert IDN host names to punycode.

Suggested-by: Alexey Melnichuk
Closes #3232

APPENDQUERY + URLENCODE would skip all equals signs but now it only skip
encoding the first to better allow "name=content" for any content.

Reported-by: Alexey Melnichuk
Fixes #3231
Closes #3231

The function identifying a leading "scheme" part of the URL considered a
few letters ending with a colon to be a scheme, making something like
"short:80" to become an unknown scheme instead of a short host name and
a port number.

Extended test 1560 to verify.

Also fixed test203 to use file_pwd to make it get the correct path on
windows. Removed test 2070 since it was a duplicate of 203.

Assisted-by: Marcel Raad
Reported-by: Hagai Auro
Fixes #3220
Fixes #3233
Closes #3223
Closes #3235

In the transfer loop it would previously not acknwledge the pause bit
and continue until drained or loop ended.

Closes #3240

- Add an undocumented diagnostic option for Windows to show the full
  paths of all loaded modules regardless of whether or not libcurl
  initialization succeeds.

This is needed so that in the CI we can get a list of all DLL
dependencies after initialization (when they're most likely to have
finished loading) and then package them as artifacts so that a
functioning build can be downloaded. Also I imagine it may have some use
as a diagnostic for help requests.

Ref: https://github.com/curl/curl/pull/3103

Closes https://github.com/curl/curl/pull/3208

Prior to this change twice as many bytes as necessary were malloc'd when
converting wchar to UTF8. To allay confusion in the future I also
changed the variable name for the amount of bytes from len to bytes.

Closes https://github.com/curl/curl/pull/3209

- for "--netrc", don't ignore the login/password specified with "--user",
  only ignore the login/password in the URL.
  This restores the netrc behaviour of curl 7.61.1 and earlier.
- fix the documentation of CURL_NETRC_REQUIRED
- improve the detection of login/password changes when reading .netrc
- don't read .netrc if both login and password are already set

Fixes #3213
Closes #3224

Fixes #3211
Fixes #3175
Closes #3212

Closes #3199

The previous coding used a format string whose output depended on the
current locale of the environment running the test. Since the gist of
the test is to have a format string, with the actual formatting being
less important, switch to a more stable formatstring with decimals.

Reported-by: Marcel Raad
Closes #3234
Reviewed-by: Daniel Stenberg <daniel@haxx.se>
Reviewed-by: Marcel Raad <Marcel.Raad@teamviewer.com>

This reverts commit 226cfa82.

This commit caused test failures on appveyor/windows. Work on fixing them is
in #3235.

...and fix symbol-scan.pl to also scan urlapi.h

Reported-by: Alexey Melnichuk
Fixes #3226
Closes #3230

The internal buffer in infof() is limited to 2048 bytes of payload plus
an additional byte for NULL termination. Servers with very long error
messages can however cause truncation of the string, which currently
isn't very clear, and leads to badly formatted output.

This appends a "...\n" (or just "..." in case the format didn't with a
newline char) marker to the end of the string to clearly show
that it has been truncated.

Also include a unittest covering infof() to try and catch any bugs
introduced in this quite important function.

Closes #3216
Reviewed-by: Daniel Stenberg <daniel@haxx.se>
Reviewed-by: Marcel Raad <Marcel.Raad@teamviewer.com>

The function identifying a leading "scheme" part of the URL considered a few
letters ending with a colon to be a scheme, making something like "short:80"
to become an unknown scheme instead of a short host name and a port number.

Extended test 1560 to verify.

Reported-by: Hagai Auro
Fixes #3220
Closes #3223

Regression from 46e16406. Extended test 1560 to verify.

Reported-by: tpaukrt on github
Fixes #3218
Closes #3219

on Linux. To make sure the test suite runs with its newly build tool and
doesn't require an external one present.

Bug: #3198
Closes #3200

The overflow has no real world impact.
Just avoid it for "best practice".

Code change suggested by "The Infinnovation Team" and Daniel Stenberg.
Closes #3184

When not actually following the redirect and the target URL is only
stored for later retrieval, curl always accepted "non-supported"
schemes. This was a regression from 46e16406.

Reported-by: Brad King
Fixes #3210
Closes #3215

Commit efc696a2

 renamed persistant.c to persistent.c to
fix the typo in the name, but missed to update the OpenVMS package
files which still looked for the old name.

Closes #3217
Reviewed-by: Daniel Stenberg <daniel@haxx.se>
Reviewed-by: Viktor Szakats <commit@vszakats.net>

To make it easier to understand other people's and remote builds etc.

Closes #3207

As has been outlined in the DEPRECATE.md document, the axTLS code has
been disabled for 6 months and is hereby removed.

Use a better supported TLS library!

Assisted-by: Daniel Gustafsson
Closes #3194

Closes #3197

... using clang

Closes #3190

Curl_verify_certificate() must use the Curl_ prefix since it is globally
available in the lib and otherwise steps outside of our namespace!

Closes #3201

It is unused since commit f7208df7.

Closes #3204

... revert the mistaken change brought in commit 8440616f.

Reported-by: Alessandro Ghedini
Bug: https://curl.haxx.se/mail/lib-2018-10/0118.html

Closes #3198

MesaLink support was added in commit 57348eb9

 but the
backend was never added to the curl_sslbackend enum in curl/curl.h.
This adds the new backend to the enum and updates the relevant docs.

Closes #3195
Reviewed-by: Daniel Stenberg <daniel@haxx.se>

Closes #3191

CVE-2018-16842
Reported-by: Brian Carpenter
Bug: https://curl.haxx.se/docs/CVE-2018-16842.html

Closes #3123

Detected by UndefinedBehaviorSanitizer

Closes #3187

Closes #3182