curl and libcurl 7.86.0

 Public curl releases:         211
 Command line options:         248
 curl_easy_setopt() options:   299
 Public functions in libcurl:  88
 Contributors:                 2696

This release includes the following changes:

 o NPN: remove support for and use of [16]

This release includes the following bugfixes:

 o cmake: fix original MinGW builds [177]
 o configure: fail if '--without-ssl' + explicit parameter for an ssl lib [164]
 o ctype: remove all use of <ctype.h>, use our own versions [12]
 o curl-compilers.m4: use -O2 as default optimize for clang [6]
 o curl_ctype: convert to macros-only [10]
 o curl_easy_pause.3: unpausing is as fast as possible [14]
 o CURLOPT_DNS_INTERFACE.3: mention it works for almost all protocols [15]
 o CURLOPT_PROXY_SSLCERT_BLOB.3: this is for HTTPS proxies [9]
 o CURLOPT_WILDCARDMATCH.3: Fix backslash escaping under single quotes [172]
 o docs: remove mentions of deprecated '--without-openssl' parameter [170]
 o ftp: ignore a 550 response to MDTM [1]
 o lib: add required Win32 setup definitions in setup-win32.h [4]
 o manpages: Fix spelling of "allows to" -> "allows one to" [171]
 o misc: ISSPACE() => ISBLANK() [11]
 o misc: spelling fixes [174]
 o setup-win32: no longer define UNICODE/_UNICODE implicitly [3]
 o tests/certs/scripts: insert standard curl source headers [169]
 o tests: fix tag syntax errors in test files
 o tool_operate: prevent over-queuing in parallel mode [176]
 o tool_operate: reduce errorbuffer allocs [173]
 o tool_progress: remove 'Qd' from the parallel progress bar [175]
 o urlapi: leaner with fewer allocs [2]

This release includes the following known bugs:

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

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

  ajak in #curl, Dan Fandrich, Daniel Stenberg, Emanuele Torre, James Fuller,
  justchen1369 on github, Keitagit-kun on github, Marcel Raad, Marc Hörsken,
  Michael Heimpold, ProceduralMan on github, Ray Satiro, Samuel Henrique,
  ssdbest on github, Viktor Szakats
  (15 contributors)

References to bug reports and discussions on issues:

 [1] = https://curl.se/bug/?i=9357
 [2] = https://curl.se/bug/?i=9408
 [3] = https://curl.se/bug/?i=9375
 [4] = https://curl.se/bug/?i=9375
 [6] = https://curl.se/bug/?i=9444
 [9] = https://curl.se/bug/?i=9434
 [10] = https://curl.se/bug/?i=9429
 [11] = https://curl.se/bug/?i=9432
 [12] = https://curl.se/bug/?i=9433
 [14] = https://curl.se/bug/?i=9410
 [15] = https://curl.se/bug/?i=9427
 [16] = https://curl.se/bug/?i=9307
 [164] = https://curl.se/bug/?i=9414
 [169] = https://curl.se/bug/?i=9417
 [170] = https://curl.se/bug/?i=9415
 [171] = https://curl.se/bug/?i=9419
 [172] = https://curl.se/bug/?i=9418
 [173] = https://curl.se/bug/?i=9394
 [174] = https://curl.se/bug/?i=9403
 [175] = https://curl.se/bug/?i=9389
 [176] = https://curl.se/bug/?i=8933
 [177] = https://curl.se/bug/?i=9214