Closes #1770

Closes #1741

Reported-by: Viktor Szakats

... and CURLOPT_NETRC_FILE(3).

Reported-by: Max Dymond

Follow-up to 171f8ded and de6de94c.

Bug: https://github.com/curl/curl/commit/de6de94#commitcomment-23370851
Reported-by: Daniel Stenberg

Reported-by: olesteban at github
Fixes #1704

Fixes #1612
Reported-by: Jeroen Ooms

Closes #1572

... and don't build at all in include

Prompted-by-work-by: Simon Warta
Ref: #1590
Closes #1591

Reported-by: Jesse Chisholm

Fixes #1623

Closes https://github.com/curl/curl/pull/1454

If libcurl was built with GSS-API support, it unconditionally advertised
GSS-API authentication while connecting to a SOCKS5 proxy.  This caused
problems in environments with improperly configured Kerberos: a stock
libcurl failed to connect, despite libcurl built without GSS-API
connected fine using username and password.

This commit introduces the CURLOPT_SOCKS5_AUTH option to control the
allowed methods for SOCKS5 authentication at run time.

Note that a new option was preferred over reusing CURLOPT_PROXYAUTH
for compatibility reasons because the set of authentication methods
allowed by default was different for HTTP and SOCKS5 proxies.

Bug: https://curl.haxx.se/mail/lib-2017-01/0005.html
Closes https://github.com/curl/curl/pull/1454

... supported since 7.54.1

... and CURLOPT_REQUEST_TARGET instead of CURLOPT_STRIP_PATH_SLASH.

This option instead provides the full "alternative" target to use in the
request, instead of extracting the path from the URL.

Test 1298 and 1299 updated accordingly.

Idea-by: Evert Pot
Suggestion: https://daniel.haxx.se/blog/2017/06/19/options-with-curl/comment-page-1/#comment-18373

Closes #1593

... to enable sending "OPTIONS *" which wasn't possible previously.

This option currently only works for HTTP.

Added test cases 1298 + 1299 to verify

Fixes #1280
Closes #1462

This change introduces new alternatives for the existing six
curl_easy_getinfo() options that return sizes or speeds as doubles. The
new versions are named like the old ones but with an appended '_T':

CURLINFO_CONTENT_LENGTH_DOWNLOAD_T
CURLINFO_CONTENT_LENGTH_UPLOAD_T
CURLINFO_SIZE_DOWNLOAD_T
CURLINFO_SIZE_UPLOAD_T
CURLINFO_SPEED_DOWNLOAD_T
CURLINFO_SPEED_UPLOAD_T

Closes #1511

... also updated the CURLOPT_PREQUOTE.3 man page to mention the correct
protocol support.

Closes #1514

... unless "--output -" is used. Binary detection is done by simply
checking for a binary zero in early data.

Added test 1425 1426 to verify.

Closes #1512

The configure-based build also has this in addition to -Wall.

Closes https://github.com/curl/curl/pull/1578

... since commit 73a2fcea

So many headers can be provided as @filename.

Suggested-by: Timothe Litt

Closes #1486

Mentioned as a problem since 2007 (8f87c15b) and of course it
existed even before that.

Closes #1547

Rely entirely on curl/system.h now.

Introduced in Aug 2008 with commit 14240e9e. Now gone.

Fixes #1456