Closes #2709

Starting 7.62.0, multiplexing is enabled by default in multi handles.

Approved-by: Daniel Gustafsson
Closes #2937

makes it not run in the CI builds

Closes #2941

Transparently. The related curl_multi_setopt() options all still returns
OK when pipelining is selected.

To re-enable the support, the single line change in lib/multi.c needs to
be reverted.

See docs/DEPRECATE.md

Closes #2705

Since scan-build would warn on the dead "Dead store/Dead increment"

Fixes #2939
Closes #2940

This is a follow-up to PR #2607 and PR #2926.

Closes #2936

- Treat 408 request timeout as transient so that curl will retry the
  request if --retry was used.

Closes #2925

The flag indicating TLS 1.3 cipher support in the OpenSSL backend was
missing.

Bug: https://github.com/curl/curl/pull/2607#issuecomment-417283187
Reported-by: Kamil Dudka

Closes #2926

... since it would cause an integer overflow if longer than (max size_t
/ 2).

This is CVE-2018-14618

Bug: https://curl.haxx.se/docs/CVE-2018-14618.html
Closes #2756
Reported-by: Zhaoyang Wu

Closes #2928

"precheck command error" is not very helpful.

Assisted-by: Rikard Falkeborn

Closes #2922

According to RFC6265 section 5.4, cookies with equal path lengths
SHOULD be sorted by creation-time (earlier first). This adds a
creation-time record to the cookie struct in order to make cookie
sorting more deterministic. The creation-time is defined as the
order of the cookies in the jar, the first cookie read fro the
jar being the oldest. The creation-time is thus not serialized
into the jar. Also remove the strcmp() matching in the sorting as
there is no lexicographic ordering in RFC6265. Existing tests are
updated to match.

Closes #2524

All these tests failed on Windows because something like
sftp://%HOSTIP:%SSHPORT%PWD/
expanded to
sftp://127.0.0.1:1234c/msys64/home/bla/curl
and then curl complained about the port number ending with a letter.

Use the original POSIX path instead of the Windows path created in
checksystem to fix this.

Closes https://github.com/curl/curl/pull/2920

Reported-by: Daniel Stenberg

Closes https://github.com/curl/curl/issues/2916

Added a warning!

Closes #2915

Patch-by: Jay Satiro
Detected by Coverity
Fixes #2739
Closes #2912

There was a missing newline.

follow-up to a7ba60bb

Reported-by: Kirill Marchuk
Fixes #2773
Closes #2911

CURLOPT_POSTFIELDSIZE is a long option.

As uintptr_t and HANDLE are always the same size, this warning is
harmless. Just silence it using an intermediate uintptr_t variable.

Closes https://github.com/curl/curl/pull/2908

Closes #2913

1) Using CERT_STORE_OPEN_EXISTING_FLAG ( or CERT_STORE_READONLY_FLAG )
while opening certificate store would be sufficient in this scenario and
less-demanding in sense of required user credentials ( for example,
IIS_IUSRS will get "Access Denied" 0x05 error for existing CertOpenStore
call without any of flags mentioned above ),

2) as 'cert_store_name' is a DWORD, attempt to format its value like a
string ( in "Failed to open cert store" error message ) will throw null
pointer exception

3) adding GetLastError(), in my opinion, will make error message more
useful.

Bug: https://curl.haxx.se/mail/lib-2018-08/0198.html

Closes #2909

Since GOPHER support was added in curl `?' character was automatically
translated to `%09' (`\t').

However, this behaviour does not seems documented in RFC 4266 and for
search selectors it is documented to directly use `%09' in the URL.
Apart that several gopher servers in the current gopherspace have CGI
support where `?' is used as part of the selector and translating it to
`%09' often leads to surprising results.

Closes #2910

Fixes test failures because of wrong line endings on Windows.

Multi-threaded applictions basically MUST set CURLOPT_NO_SIGNAL to 1L to
avoid the risk of getting a SIGPIPE.

Either way, a multi-threaded application that uses libcurl/openssl needs
to have a signhandler for or ignore SIGPIPE on its own.

Based on discussions in #2800
Closes #2904

- test 1268 requires unix sockets
- test 2072 must be disabled also for MSYS/MinGW

When Curl_http2_done() gets called before the http2 data is setup all
the way, we cannot send anything and this should just return an error.

Detected by OSS-Fuzz
Bug: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=10012