Curl and libcurl 7.50.2

 Public curl releases:         158
 Command line options:         185
 curl_easy_setopt() options:   224
 Public functions in libcurl:  61
 Contributors:                 1441

This release includes the following bugfixes:

 o mbedtls: Added support for NTLM
 o SSH: fixed SFTP/SCP transfer problems [1]
 o multi: make Curl_expire() work with 0 ms timeouts
 o mk-ca-bundle.pl: -m keeps ca cert meta data in output [2]
 o TFTP: Fix upload problem with piped input [3]
 o CURLOPT_TCP_NODELAY: now enabled by default [4]
 o mbedtls: set verbose TLS debug when MBEDTLS_DEBUG is defined [5]
 o http2: always wait for readable socket
 o cmake: Enable win32 large file support by default
 o cmake: Enable win32 threaded resolver by default
 o winbuild: Avoid setting redundant CFLAGS to compile commands [6]
 o curl.h: make CURL_NO_OLDIES define CURL_STRICTER
 o docs: make more markdown files use .md extension
 o docs: CONTRIBUTE and LICENSE-MIXING were converted to markdown
 o winbuild: Allow changing C compiler via environment variable CC [7]
 o rtsp: accept any RTSP session id [8]
 o HTTP: retry failed HEAD requests on reused connections too
 o configure: add zlib search with pkg-config [9]
 o openssl: accept subjectAltName iPAddress if no dNSName match [10]
 o MANUAL: Remove invalid link to LDAP documentation [11]
 o socks: improved connection procedure [12]
 o proxy: reject attempts to use unsupported proxy schemes
 o proxy: bring back use of "Proxy-Connection:" [13]
 o curl: allow "pkcs11:" prefix for client certificates [14]
 o spnego_sspi: fix memory leak in case *outlen is zero [15]
 o SOCKS: improve verbose output of SOCKS5 connection sequence
 o SOCKS: display the hostname returned by the SOCKS5 proxy server
 o http/sasl: Query authentication mechanism supported by SSPI before using
 o sasl: Don't use GSSAPI authentication when domain name not specified [16]
 o win: Basic support for Universal Windows Platform apps [17]
 o nss: fix incorrect use of a previously loaded certificate from file
 o nss: work around race condition in PK11_FindSlotByName() [18]
 o ftp: fix wrong poll on the secondary socket [19]
 o openssl: build warning-free with 1.1.0 (again)
 o HTTP: stop parsing headers when switching to unknown protocols [20]
 o test219: Add http as a required feature
 o TLS: random file/egd doesn't have to match for conn reuse
 o schannel: Disable ALPN for Wine since it is causing problems [21]
 o http2: make sure stream errors don't needlessly close the connection [22]
 o http2: return CURLE_HTTP2_STREAM for unexpected stream close [23]
 o darwinssl: --cainfo is intended for backward compatibility only
 o speed caps: not based on average speeds anymore [24]
 o configure: make the cpp -P detection not clobber CPPFLAGS [25]
 o http2: use named define instead of magic constant in read callback
 o http2: skip the content-length parsing, detect unknown size
 o http2: return EOF when done uploading without known size [26]
 o darwinssl: test for errSecSuccess in PKCS12 import rather than noErr [27]
 o openssl: fix CURLINFO_SSL_VERIFYRESULT [28]

This release includes the following known bugs:

 o see docs/KNOWN_BUGS (https://curl.haxx.se/docs/knownbugs.html)

This release would not have looked like this without help, code, reports and
advice from friends like these:

  Ales Novak, Bill Nagel, Christian Fillion, Craig Davison, Dambaev Alexander,
  Dan Donahue, Dan Fandrich, Daniel Gustafsson, Daniel Stenberg,
  David Kalnischkies, David Woodhouse, Erik Janssen, Gaurav Malhotra,
  János Fekete, Kamil Dudka, Marcel Raad, Marc Hörsken, Marco Deckel,
  Mark Hamilton, Mark Nottingham, Michael Kaufmann, Miroslav Franc,
  Nick Zitzmann, Olivier Brunel, Peter Wang, Ray Satiro, Ronnie Mose,
  Sergei Nikulov, Serj Kalichev, Simon Warta, Steve Holme, Tatsuhiro Tsujikawa,
  Thomas Glanzmann, Tim Rühsen, wmsch on github,
  (35 contributors)

        Thanks! (and sorry if I forgot to mention someone)

References to bug reports and discussions on issues:

 [1] = https://curl.haxx.se/mail/lib-2016-07/0057.html
 [2] = https://curl.haxx.se/bug/?i=937
 [3] = https://curl.haxx.se/bug/?i=857
 [4] = https://curl.haxx.se/mail/lib-2016-06/0143.html
 [5] = https://curl.haxx.se/mail/lib-2016-08/0017.html
 [6] = https://curl.haxx.se/bug/?i=949
 [7] = https://curl.haxx.se/bug/?i=952
 [8] = https://curl.haxx.se/mail/lib-2016-08/0076.html
 [9] = https://curl.haxx.se/bug/?i=956
 [10] = https://curl.haxx.se/bug/?i=959
 [11] = https://curl.haxx.se/bug/?i=962
 [12] = https://curl.haxx.se/bug/?i=944
 [13] = https://curl.haxx.se/bug/?i=954
 [14] = https://curl.haxx.se/mail/lib-2016-08/0122.html
 [15] = https://curl.haxx.se/bug/?i=970
 [16] = https://curl.haxx.se/bug/?i=718
 [17] = https://curl.haxx.se/bug/?i=820
 [18] = https://bugzilla.mozilla.org/1297397
 [19] = https://curl.haxx.se/bug/?i=978
 [20] = https://curl.haxx.se/bug/?i=899
 [21] = https://curl.haxx.se/bug/?i=983
 [22] = https://curl.haxx.se/bug/?i=941
 [23] = https://curl.haxx.se/bug/?i=986
 [24] = https://curl.haxx.se/bug/?i=971
 [25] = https://curl.haxx.se/bug/?i=958
 [26] = https://curl.haxx.se/bug/?i=982
 [27] = https://curl.haxx.se/bug/?i=993
 [28] = https://curl.haxx.se/bug/?i=995