Closes #3698

... to match the style already used for compiling, linking
etc. Acknowledges 'make V=1' to enable verbose.

Closes #3681

Suggested-by: Eric Curtin
Improved-by: Dan Fandrich
Ref: #3680

Closes #3683

From a discussion in #3676

Suggested-by: Tim Rühsen

Closes #3682

.. and for Windows also call WSACleanup since we call WSAStartup.

The example is to demonstrate handling the socket independently of
libcurl. In this case libcurl is not responsible for creating, opening
or closing the socket, it is handled by the application (our example).

Fixes https://github.com/curl/curl/pull/3663

Clarify the language and simplify.

Reported-by: Daniel Lublin
Closes #3658

Closes #3145

That's the only public curl header we should encourage use of.

Reviewed-by: Marcel Raad
Closes #3645

Closes #3498

Reported-by: Sara Golemon

Fixes #3592
Closes #3634

The main change here is the timer value that was wrong, it was given in
usecs (ms * 1000), while the itimerspec struct wants nsecs (ms * 1000 *
1000). This resulted in the callback being invoked WAY TOO OFTEN.

As a quick check you can run this command before and after applying this
commit:

    # shell 1
    ./ephiperfifo 2>&1 | tee ephiperfifo.log
    # shell 2
    echo http://hacking.elboulangero.com

 > hiper.fifo

Then just compare the size of the logs files.

Closes #3633
Fixes #3632
Signed-off-by: Arnaud Rebillout <arnaud.rebillout@collabora.com>

 - use better variable names to explain their purposes
 - convert logic to curl_multi_wait()

clarify redir - "in absurdum" doesn't seem to make sense in this context

Closes #3631

Everyone calls it Secure Transport, now we do too.

Reviewed-by: Nick Zitzmann

Closes #3619

Closes #3421

Add support for Ephemeral elliptic curve Diffie-Hellman key exchange
algorithm option when selecting ciphers. This became available on the
Win10 SDK.

Closes https://github.com/curl/curl/pull/3608

From within the timer callbacks. Recursive is problematic for several
reasons. They should still work, but this way the examples and the
documentation becomes simpler. I don't think we need to encourage
recursive calls.

Discussed in #3537
Closes #3601

Suggested-by: Nicolas Grekas

... and remove it from the dist tarball. It has served its time, it
barely gets updated anymore and "everything curl" is now convering all
this document once tried to include, and does it more and better.

In the compressed scenario, this removes ~15K data from the binary,
which is 25% of the -M output.

It remains in the git repo for now for as long as the web site builds a
page using that as source. It renders poorly on the site (especially for
mobile users) so its not even good there.

Closes #3587

and make CONNECT_ONLY conections never reuse any existing ones either.

Reported-by: Pavel Löbl
Bug: https://curl.haxx.se/mail/lib-2019-02/0064.html
Closes #3586

[ci skip]

To avoid NULL pointer dereferences etc in the case of problems.

Closes #3580

The draft-ietf-httpbis-rfc6265bis-02 draft, specify a set of prefixes
and how they should affect cookie initialization, which has been
adopted by the major browsers. This adds support for the two prefixes
defined, __Host- and __Secure, and updates the testcase with the
supplied examples from the draft.

Closes #3554
Reviewed-by: Daniel Stenberg <daniel@haxx.se>

Detected by scan-build

Fix scan-build warnings, no globals, no silly handle scan. Also remove
handles from the multi before cleaning up.

To avoid scan-build warnings and global variables.

Detected by scan-build

Detected by scan-build

in ftpget, ftpsget and sftpget, so that scan-build stops warning for
potential NULL pointer dereference below!

Detected by scan-build

Closes #2367