Added a section to system.h guarded with __xlc__ for the IBM xml C
compiler. Before this change the section titled 'generic "safe guess" on
old 32 bit style' was used, which resulted in a wrong definition of
CURL_TYPEOF_CURL_SOCKLEN_T, and for 64-bit also CURL_TYPEOF_CURL_OFF_T
was wrong.

Compilation warnings fixed with this change:

  CC       libcurl_la-ftp.lo
"ftp.c", line 290.55: 1506-280 (W) Function argument assignment between types "unsigned long* restrict" and "int*" is not allowed.
"ftp.c", line 293.48: 1506-280 (W) Function argument assignment between types "unsigned long* restrict" and "int*" is not allowed.
"ftp.c", line 1070.49: 1506-280 (W) Function argument assignment between types "unsigned long* restrict" and "int*" is not allowed.
"ftp.c", line 1154.53: 1506-280 (W) Function argument assignment between types "unsigned long* restrict" and "int*" is not allowed.
"ftp.c", line 1187.51: 1506-280 (W) Function argument assignment between types "uns...

Detected using the `codespell` tool (version 1.13.0).

Also secure and fix an URL.

URL: https://curl.haxx.se/mail/lib-2018-06/0000.html

This is step one. It adds #error statements that require source edits to
make curl build again if asked to use axTLS. At a later stage we might
remove the axTLS specific code completely.

Closes #2628

According to the user survey 2018, not even one out of 670 users use
them. Nobody on the mailing list spoke up for them either.

Closes #2629

... for curl_dofreeaddrinfo

... it might call infof() with a NULL first argument that isn't harmful
but makes it not do anything. The infof() line is not very useful
anymore, it has served it purpose. Good riddance!

Fixes #2627

If there's an existing entry using the selected name.

Closes #2622

If configure detects fnmatch to be available, use that instead of our
custom one for FTP wildcard pattern matching. For standard compliance,
to reduce our footprint and to use already well tested and well
exercised code.

A POSIX fnmatch behaves slightly different than the internal function
for a few test patterns currently and the macOS one yet slightly
different. Test case 1307 is adjusted for these differences.

Closes #2626

Follow-up to commit 946ce5b6

Closes #2276

On our x86 Android toolchain, getpwuid_r is implemented but the header
is missing:

 netrc.c:81:7: error: implicit declaration of function 'getpwuid_r' [-Werror=implicit-function-declaration]

Unfortunately, the function is used in curl_ntlm_wb.c, too, so I moved
the prototype to curl_setup.h.

Signed-off-by: Bernhard Walle <bernhard@bwalle.de>
Closes #2609

Closes #2624

Closes #2623

Adds CURLOPT_DISALLOW_USERNAME_IN_URL and --disallow-username-in-url. Makes
libcurl reject URLs with a username in them.

Closes #2340

* enable it in `src/Makefile.m32`
* enable it in `winbuild/MakefileBuild.vc` if a custom manifest is
  _not_ enabled via the existing `EMBED_MANIFEST` option
* enable it for all Windows CMake builds (also disable the built-in
  minimal manifest, added by CMake by default.)

For other build systems, add the `-DCURL_EMBED_MANIFEST` option to
the list of RC (Resource Compiler) flags to enable the manifest
included in `src/curl.rc`. This may require to disable whatever
automatic or other means in which way another manifest is added to
`curl.exe`.

Notice that Borland C doesn't support this method due to a
long-pending resource compiler bug. Watcom C may also not handle
it correctly when the `-zm` `wrc` option is used (this option may
be unnecessary though) and regardless of options in certain earlier
revisions of the 2.0 beta version.

Closes https://github.com/curl/curl/pull/1221
Fixes https://github.com/curl/curl/issues/2591

Also sync ILE/RPG binding to define the new functions.

Adds CURLOPT_TLS13_CIPHERS and CURLOPT_PROXY_TLS13_CIPHERS.

curl: added --tls13-ciphers and --proxy-tls13-ciphers

Fixes #2435
Reported-by: zzq1015 on github
Closes #2607

The automake default ar flags are 'cru', but the 'u' flag in there
causes warnings on many modern Linux distros. Removing 'u' may have a
minor performance impact on older distros but should not cause harm.

Explained on the automake mailing list already back in April 2015:

https://www.mail-archive.com/automake-patches@gnu.org/msg07705.html

Reported-by: elephoenix on github
Fixes #2617
Closes #2619

... the older description doesn't work

Reported-by: Peter Varga
Fixes #2615
Closes #2616

This was added earlier but appears to have been removed accidentally.

AFAICT this is very much still an issue.

-----

I say "accidentally" because the text seems to have harmlessly snuck
into [1] (which makes no mention of it).  [1] was later reverted for
unspecified reasons in [2], presumably because the mentioned issue was
fixed or invalid.

[1] de9fac00
[2] 16d1f369

Closes #2618

A non-escaped bracket ([) is for a character group - as documented. It
will *not* match an individual bracket anymore. Test case 1307 updated
accordingly to match.

Problem detected by OSS-Fuzz, although this fix is probably not a final
fix for the notorious timeout issues.

Bug: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=8525
Closes #2614

The latest psl is cached in the multi or share handle. It is refreshed
before use after 72 hours.
New share lock CURL_LOCK_DATA_PSL controls the psl cache sharing.
If the latest psl is not available, the builtin psl is used.

Reported-by: Yaakov Selkowitz
Fixes #2553
Closes #2601

The ssh2 pkg-config file could contain the following lines when build
with a static version of mbedtls:
   Libs: -L${libdir} -lssh2 /xxx/libmbedcrypto.a
   Libs.private: /xxx/libmbedcrypto.a

This static mbedtls library must be used to correctly detect ssh2
support and this library must be copied in libcurl.pc otherwise
compilation of any application (such as upmpdcli) with libcurl will fail
when trying to found mbedtls functions included in libssh2.  So, replace
pkg-config --libs-only-l by pkg-config --libs.

Fixes:
 - http://autobuild.buildroot.net/results/43e24b22a77f616d6198c10435dcc23cc3b9088a



Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Closes #2613

The autotools-based build system does it, so we do it also in CMake.

Bug: #2609
Signed-off-by: Bernhard Walle <bernhard@bwalle.de>

--data, --form, and --ntlm were declared to be mutually exclusive with
non-existing options. --data and --form referred to --upload (which is
short for --upload-file and therefore did work, so this one was merely
a bit confusing), --ntlm referred to --negotiated instead of --negotiate.

Closes #2612

Almost all headers start with an uppercase letter, but some didn't.

Closes #2604

Change requirement from $(DISTDIR) to $(DIRDIST)

closes #2603