cURL 7.84.0

What's new in this version:

Changed:
- curl: add --rate to set max request rate per time unit
- curl: deprecate --random-file and --egd-file
- curl_version_info: add CURL_VERSION_THREADSAFE
- CURLINFO_CAPATH/CAINFO: get the default CA paths from libcurl
- lib: make curl_global_init() threadsafe when possible
- libssh2: add CURLOPT_SSH_HOSTKEYFUNCTION
- opts: deprecate RANDOM_FILE and EGDSOCKET
- socks: support unix sockets for socks proxy

Fixed:
- aws-sigv4: fix potentional NULL pointer arithmetic
- bindlocal: don't use a random port if port number would wrap
- c-hyper: mark status line as status for Curl_client_write()
- ci: avoid `cmake -Hpath`
- CI: bump FreeBSD 13.0 to 13.1
- ci: update github actions
- cmake: add libpsl support
- cmake: do not add libcurl.rc to the static libcurl library
- cmake: enable curl.rc for all Windows targets
- cmake: fix detecting libidn2
- cmake: support adding a suffix to the OS value
- configure: skip libidn2 detection when winidn is used
- configure: use the SED value to invoke sed
- configure: warn about rustls being experimental
- content_encoding: return error on too many compression steps
- cookie: address secure domain overlay
- cookie: apply limits
- copyright.pl: parse and use .reuse/dep5 for skips
- copyright: make repository REUSE compliant
- curl.1: add a few see also --tls-max
- curl.1: mention exit code zero too
- curl: re-enable --no-remote-name
- curl_easy_pause.3: remove explanation of progress function
- curl_getdate.3: document that some illegal dates pass through
- Curl_parsenetrc: don't access local pwbuf outside of scope
- curl_url_set.3: clarify by default using known schemes only
- CURLOPT_ALTSVC.3: document the file format
- CURLOPT_FILETIME.3: fix the protocols this works with
- CURLOPT_HTTPHEADER.3: improve comment in example
- CURLOPT_NETRC.3: document the .netrc file format
- CURLOPT_PORT.3: We discourage using this option
- CURLOPT_RANGE.3: remove ranged upload advice
- digest: added detection of more syntax error in server headers
- digest: tolerate missing "realm"
- digest: unquote realm and nonce before processing
- DISABLED: disable 1021 for hyper again
- docs/cmdline-opts: add copyright and license identifier to each file
- docs/CONTRIBUTE.md: document the 'needs-votes' concept
- docs: clarify data replacement policy for MIME API
- doh: remove UNITTEST macro definition
- examples/crawler.c: use the curl license
- examples: remove fopen.c and rtsp.c
- FAQ: Clarify Windows double quote usage
- fopen: add Curl_fopen() for better overwriting of files
- ftp: restore protocol state after http proxy CONNECT
- ftp: when failing to do a secure GSSAPI login, fail hard
- GHA/hyper: enable debug in the build
- gssapi: improve handling of errors from gss_display_status
- gssapi: initialize gss_buffer_desc strings
- headers api: remove EXPERIMENTAL tag
- http2: always debug print stream id in decimal with %u
- http2: reject overly many push-promise headers
- http: restore header folding behavior
- hyper: use 'alt-used'
- krb5: return error properly on decode errors
- lib: make more protocol specific struct fields #ifdefed
- libcurl-security.3: add "Secrets in memory"
- libcurl-security.3: document CRLF header injection
- libssh: skip the fake-close when libssh does the right thing
- links: update dead links to the curl-wiki
- log2changes: do not indent empty lines [ci skip]
- macos9: remove partial support
- Makefile.am: fix portability issues
- Makefile.m32: delete obsolete options, improve -On [ci skip]
- Makefile.m32: delete two obsolete OpenSSL options [ci skip]
- Makefile.m32: stop forcing XP target with ipv6 enabled [ci skip]
- max-time.d: clarify max-time sets max transfer time
- mprintf: ignore clang non-literal format string
- netrc: check %USERPROFILE% as well on Windows
- netrc: support quoted strings
- ngtcp2: allow curl to send larger UDP datagrams
- ngtcp2: correct use of ngtcp2 and nghttp3 signed integer types
- ngtcp2: enable Linux GSO
- ngtcp2: extend QUIC transport parameters buffer
- ngtcp2: fix alert_read_func return value
- ngtcp2: fix typo in preprocessor condition
- ngtcp2: handle error from ngtcp2_conn_submit_crypto_data
- ngtcp2: send appropriate connection close error code
- ngtcp2: support boringssl crypto backend
- ngtcp2: use helper funcs to simplify TLS handshake integration
- ntlm: provide a fixed fake host name
- projects: fix third-party SSL library build paths for Visual Studio
- quic: add Curl_quic_idle
- quiche: support ca-fallback
- rand: stop detecting /dev/urandom in cross-builds
- remote-name.d: mention --output-dir
- runtests.pl: add the --repeat parameter to the --help output
- runtests: fix skipping tests not done event-based
- runtests: skip starting the ssh server if user name is lacking
- scripts/copyright.pl: fix the exclusion to not ignore man pages
- sectransp: check for a function defined when __BLOCKS__ is undefined
- select: return error from "lethal" poll/select errors
- server/sws: support spaces in the HTTP request path
- speed-limit/time.d: mention these affect transfers in either direction
- strcase: some optimisations
- test 2081: add a valid reply for the second request
- test 675: add missing CR so the test passes when run through Privoxy
- test414: add the '--resolve' keyword
- test681: verify --no-remote-name
- tests 266, 116 and 1540: add a small write delay
- tests/data/test1501: kill ftp server after slow LIST response
- tests/getpart: fix getpartattr to work with "data" and "data2"
- tests/server/sws.c: change the HTTP writedelay unit to milliseconds
- test{440,441,493,977}: add "HTTP proxy" keywords
- tool_getparam: fix --parallel-max maximum value constraint
- tool_operate: make sure --fail-with-body works with --retry
- transfer: fix potential NULL pointer dereference
- transfer: maintain --path-as-is after redirects
- transfer: upload performance; avoid tiny send
- url: free old conn better on reuse
- url: remove redundant #ifdefs in allocate_conn()
- url: URL encode the path when extracted, if spaces were set
- urlapi: make curl_url_set(url, CURLUPART_URL, NULL, 0) clear all parts
- urlapi: support CURLU_URLENCODE for curl_url_get()
- urldata: reduce size of a few struct fields
- urldata: remove three unused booleans from struct UserDefined
- urldata: store tcp_keepidle and tcp_keepintvl as ints
- version: allow stricmp() for sorting the feature list
- vtls: make curl_global_sslset thread-safe
- wolfssh.h: removed
- wolfssl: correct the failf() message when a handle can't be made
- wolfSSL: explicitly use compatibility layer
- x509asn1: mark msnprintf return as unchecked