curl and libcurl 7.69.0

 Public curl releases:         189
 Command line options:         230
 curl_easy_setopt() options:   270
 Public functions in libcurl:  82
 Contributors:                 2088

This release includes the following changes:

 o smtp: introducing CURLOPT_MAIL_RCPT_ALLLOWFAILS and --mail-rcpt-allowfails [23]
 o wolfSSH: new support SSH backend [5]
 o polarssl: removed [16]

This release includes the following bugfixes:

 o CMake: Add support for CMAKE_LTO option [22]
 o CMake: use check_symbol_exists also for inet_pton [19]
 o CURLOPT_PROXY_SSL_OPTIONS.3: Sync with CURLOPT_SSL_OPTIONS.3
 o HTTP-COOKIES.md: describe the cookie file format [21]
 o cmake: Enable SMB for Windows builds [12]
 o cmake: Improve libssh2 check on Windows [8]
 o cmake: support specifying the target Windows version [27]
 o conn: do not reuse connection if SOCKS proxy credentials differ [32]
 o conncache: removed unused Curl_conncache_bundle_size() [33]
 o connection reuse: respect the max_concurrent_streams limits [3]
 o curl: Let -D merge headers in one file again [25]
 o curl: make #0 not output the full URL [4]
 o curl: make the -# spaceship bar not wrap the line [30]
 o curl: remove 'config' field from OutStruct [6]
 o curl:progressbarinit: ignore column width from terminals < 20 [18]
 o curl_global_init: assume the EINTR bit by default [31]
 o data.d: remove "Multiple files can also be specified" [26]
 o form.d: fix two minor typos [34]
 o hostip: move code to resolve IP address literals to `Curl_resolv` [13]
 o http: increase EXPECT_100_THRESHOLD to 1Mb [28]
 o http: move "oauth_bearer" from connectdata to Curl_easy [24]
 o include: remove non-curl prefixed defines [15]
 o libssh2: add support for forcing a hostkey type [7]
 o libssh2: fix variable type [17]
 o llist: removed unused Curl_llist_move() [33]
 o mk-ca-bundle: add support for CKA_NSS_SERVER_DISTRUST_AFTER [36]
 o multi: Change curl_multi_wait/poll to error on negative timeout [11]
 o ngtcp2: Add an error code for QUIC connection errors [10]
 o openssl: make CURLINFO_CERTINFO not truncate x509v3 fields [35]
 o os400: fixed the build [29]
 o runtests: make random seed fixed for a month [1]
 o schannel: Make CURLOPT_CAINFO work better on Windows 7 [9]
 o schannel_verify: Fix alt names manual verify for UNICODE builds [20]
 o singleuse.pl: support new API functions, fix curl_dbg_ handling [33]
 o strcase: turn Curl_raw_tolower into static [33]
 o tool_dirhie: Allow directory traversal during creation [2]
 o urldata: do string enums without #ifdefs for build scripts [29]
 o vtls: Refactor Curl_multissl_version to make the code clearer [14]

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:

  Andrew Potter, Aron Rotteveel, bnfp on github, Brian Carpenter,
  bsammon on github, Christian Heimes, Daniel Marjamäki, Daniel Stenberg,
  Emil Engler, Faizur Rahman, hamstergene on github, Jeroen Ooms,
  Johannes Schindelin, Jon Rumsey, Kunal Ekawde, Marc Aldorasi, Marcel Raad,
  mbeifuss on github, Mike Norton, naost3rn on github, Nicolas Guillier,
  Pavel Volgarev, Peter Piekarski, Ray Satiro, Santino Keupp, Tobias Hieta,
  vshmuk on hackerone, 加藤郁之,
  (28 contributors)

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

References to bug reports and discussions on issues:

 [1] = https://curl.haxx.se/bug/?i=4734
 [2] = https://curl.haxx.se/bug/?i=4796
 [3] = https://curl.haxx.se/bug/?i=4779
 [4] = https://curl.haxx.se/bug/?i=4812
 [5] = https://daniel.haxx.se/blog/2020/01/12/curl-even-more-wolfed/
 [6] = https://curl.haxx.se/bug/?i=4807
 [7] = https://curl.haxx.se/bug/?i=4747
 [8] = https://curl.haxx.se/bug/?i=4804
 [9] = https://curl.haxx.se/bug/?i=3711
 [10] = https://curl.haxx.se/bug/?i=4754
 [11] = https://curl.haxx.se/bug/?i=4763
 [12] = https://curl.haxx.se/bug/?i=4717
 [13] = https://curl.haxx.se/bug/?i=4798
 [14] = https://curl.haxx.se/bug/?i=4803
 [15] = https://curl.haxx.se/bug/?i=4793
 [16] = https://curl.haxx.se/bug/?i=4825
 [17] = https://curl.haxx.se/bug/?i=4823
 [18] = https://curl.haxx.se/bug/?i=4818
 [19] = https://curl.haxx.se/bug/?i=4808
 [20] = https://curl.haxx.se/bug/?i=4761
 [21] = https://curl.haxx.se/bug/?i=4805
 [22] = https://curl.haxx.se/bug/?i=4799
 [23] = https://curl.haxx.se/bug/?i=4816
 [24] = https://curl.haxx.se/bug/?i=4824
 [25] = https://curl.haxx.se/bug/?i=4762
 [26] = https://curl.haxx.se/mail/archive-2020-01/0016.html
 [27] = https://curl.haxx.se/bug/?i=4815
 [28] = https://curl.haxx.se/bug/?i=4814
 [29] = https://curl.haxx.se/bug/?i=4822
 [30] = https://curl.haxx.se/bug/?i=4849
 [31] = https://curl.haxx.se/bug/?i=4840
 [32] = https://curl.haxx.se/bug/?i=4835
 [33] = https://curl.haxx.se/bug/?i=4842
 [34] = https://curl.haxx.se/bug/?i=4843
 [35] = https://curl.haxx.se/bug/?i=4837
 [36] = https://curl.haxx.se/bug/?i=4834