curl and libcurl 7.68.0

 Public curl releases:         187
 Command line options:         226
 curl_easy_setopt() options:   269
 Public functions in libcurl:  81
 Contributors:                 2056

This release includes the following changes:

 o

This release includes the following bugfixes:

 o CURL-DISABLE: initial docs for the CURL_DISABLE_* defines [19]
 o HISTORY: added cmake, HTTP/3 and parallel downloads with curl
 o INSTALL.md: provide Android build instructions [10]
 o altsvc: bump to h3-24 [6]
 o build: fix for CURL_DISABLE_DOH [2]
 o checksrc: repair the copyrightyear check [25]
 o config-win32: cpu-machine-OS for Windows on ARM [13]
 o configure: avoid unportable `==' test(1) operator [1]
 o configure: fix typo in help text [4]
 o copyrights: fix copyright year range [25]
 o curl: fix -T globbing [16]
 o doh: improced both encoding and decoding [11]
 o examples: add multi-poll.c [14]
 o lib: Move lib/ssh.h -> lib/vssh/ssh.h [9]
 o multi_poll: avoid busy-loop when called without easy handles attached [15]
 o ngtcp2: free used resources on disconnect [7]
 o ngtcp2: handle key updates as ngtcp2 master branch tells us [8]
 o ngtcp2: increase QUIC window size when data is consumed [12]
 o ngtcp2: use overflow buffer for extra HTTP/3 data [5]
 o ntlm: USE_WIN32_CRYPTO check removed to get USE_NTLM2SESSION set [3]
 o openssl: prevent recursive function calls from ctx callbacks [18]
 o pause: avoid updating socket if done was already called [22]
 o quiche: reject HTTP/3 headers in the wrong order [17]
 o remove_handle: clear expire timers after multi_done() [20]
 o strerror: Fix an error looking up some Windows error strings
 o system.h: fix for MCST lcc compiler [23]
 o test1558: use double slash after file: [21]
 o test1560: require IPv6 for IPv6 aware URL parsing [24]

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:

  3dyd on github, Anderson Sasaki, Andreas Falkenhahn, Christian Schmitz,
  Cynthia Coan, Daniel Stenberg, Gergely Nagy, Javier Blazquez, Kamil Dudka,
  Leonardo Taccari, Marcel Raad, Massimiliano Fantuzzi, Max Kellermann,
  Melissa Mears, Ray Satiro, Richard Bowker, SLDiggie on github,
  Tatsuhiro Tsujikawa, Wyatt O'Day,
  (19 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=4567
 [2] = https://curl.haxx.se/bug/?i=4565
 [3] = https://curl.haxx.se/bug/?i=3704
 [4] = https://curl.haxx.se/bug/?i=4570
 [5] = https://curl.haxx.se/bug/?i=4525
 [6] = https://curl.haxx.se/bug/?i=4604
 [7] = https://curl.haxx.se/bug/?i=4614
 [8] = https://curl.haxx.se/bug/?i=4612
 [9] = https://curl.haxx.se/bug/?i=4609
 [10] = https://curl.haxx.se/bug/?i=4606
 [11] = https://curl.haxx.se/bug/?i=4598
 [12] = https://curl.haxx.se/bug/?i=4600
 [13] = https://curl.haxx.se/bug/?i=4590
 [14] = https://curl.haxx.se/bug/?i=4596
 [15] = https://curl.haxx.se/bug/?i=4594
 [16] = https://curl.haxx.se/bug/?i=4588
 [17] = https://curl.haxx.se/bug/?i=4571
 [18] = https://curl.haxx.se/bug/?i=4585
 [19] = https://curl.haxx.se/bug/?i=4545
 [20] = https://curl.haxx.se/bug/?i=4575
 [21] = https://curl.haxx.se/bug/?i=4554
 [22] = https://curl.haxx.se/bug/?i=4563
 [23] = https://curl.haxx.se/bug/?i=4576
 [24] = https://curl.haxx.se/bug/?i=4556
 [25] = https://curl.haxx.se/bug/?i=4549