cURL 7.81.0

What's new in this version:

Changes:
- mime: use percent-escaping for multipart form field and file names

Fixed:
- asyn-ares: ares_getaddrinfo needs no happy eyeballs timer
- azure: make the "w/o HTTP/SMTP/IMAP" build disable SSL proper
- BINDINGS: add cURL client for PostgreSQL
- BINDINGS: add one from Everything curl and update a link
- checksrc: detect more kinds of NULL comparisons we avoid
- CI: build examples for additional code verification
- CI: bump job to use mbedtls 3.1.0
- cmake: don't set _USRDLL on a static Windows build
- cmake: prevent dev warning due to mismatched arg
- cmake: private identifiers use CURL_ instead of CMAKE_ prefix
- config.d: update documentation to match the path search
- configure: add -lm to configure for rustls build.
- configure: better diagnostics if hyper is built wrong
- configure: don't enable TLS when --without-* flags are used
- configure: fix runtime-lib detection on macOS
- curl.1: require "see also" for every documented option
- curl: improve error message for --head with -J
- curl_easy_cleanup.3: remove from multi handle first
- curl_easy_escape.3: call curl_easy_cleanup in example
- curl_easy_unescape.3: call curl_easy_cleanup in example
- curl_multi_init.3: fix EXAMPLE formatting
- curl_multi_perform/socket_action.3: clarify what errors mean
- curl_share_setopt.3: split out options into their own manpages
- CURLOPT_STDERR.3: does not work with libcurl as a win32 DLL
- digest: compute user:realm:pass digest w/o userhash
- docs/checksrc: Add documentation for STRERROR
- docs/cmdline-opts: do not say "protocols: all"
- docs/examples: workaround broken -Wno-pedantic-ms-format
- docs/HTTP3: describe how to setup a h3 reverse-proxy for testing
- docs/INSTALL.md: typo fix : added missing "get" verb
- docs/URL-SYNTAX.md: space is not fine in a given URL
- docs: add known bugs list to HTTP3.md
- docs: address proselint nits
- docs: consistent manpage SYNOPSIS
- docs: fix dead links, remove ECH.md
- docs: fix typo in OpenSSL 3 build instructions
- docs: Update the Reducing Size section
- example/progressfunc: remove code for old libcurls
- examples/multi-single.c: remove WAITMS()
- FAQ: typo fix : "yout" ➤ "your"
- ftp: disable warning 4706 in MSVC
- gen.pl: improve example output format
- github workflow: add wolfssl (removed from zuul)
- github/workflows: add mbedtls and mbedtls-clang (removed from zuul)
- gtls: check return code for gnutls_alpn_set_protocols
- hash: lazy-alloc the table in Curl_hash_add()
- http2:set_transfer_url() return early on OOM
- HTTP3: update quiche build instructions
- http: enable haproxy support for hyper backend
- http: Fix CURLOPT_HTTP200ALIASES
- http_proxy: don't close the socket (too early)
- insecure.d: detail its use for SFTP and SCP as well
- insecure.d: expand and clarify
- libcurl-multi.3: "SOCKS proxy handshakes" are not blocking
- libcurl-security.3: mention address and URL mitigations
- libssh2: fix error message for sha256 mismatch
- libtest: avoid "assignment within conditional expression"
- lift: ignore is a deprecated config option, use ignoreRules
- linkcheck.yml: add CI job that checks markdown links
- m4/curl-compilers: tell clang -Wno-pointer-bool-conversion
- Makefile.m32: rename -winssl option to -schannel and tidy up
- mbedTLS: add support for CURLOPT_CAINFO_BLOB
- mbedtls: fix CURLOPT_SSLCERT_BLOB
- mbedtls: fix private member designations for v3.1.0
- misc: remove unused doh flags when CURL_DISABLE_DOH is defined
- misc: s/e-mail/email
- multi: cleanup the socket hash when destroying it
- multi: handle errors returned from socket/timer callbacks
- multi: shut down CONNECT in Curl_detach_connnection
- netrc.d: edit the .netrc example to look nicer
- ngtcp2: verify the server cert on connect (quictls)
- ngtcp2: verify the server certificate for the gnutls case
- nss:set_cipher don't clobber the cipher list
- openldap: implement STARTTLS
- openldap: process search query response messages one by one
- openldap: several minor improvements
- openldap: simplify ldif generation code
- openssl: check the return value of BIO_new()
- openssl: define HAVE_OPENSSL_VERSION for OpenSSL 1.1.0+
- openssl: remove `RSA_METHOD_FLAG_NO_CHECK` handling if unavailable
- openssl: remove usage of deprecated `SSL_get_peer_certificate`
- openssl: use non-deprecated API to read key parameters
- page-footer: add a mention of how to report bugs to the man page
- page-footer: document more environment variables
- request.d: refer to 'method' rather than 'command'
- retry-all-errors.d: make the example complete
- runtests: make the SSH library a testable feature
- rustls: read of zero bytes might be okay
- rustls: remove comment about checking handshaking
- rustls: remove incorrect EOF check
- sha256/md5: return errors when init fails
- socks5: use appropriate ATYP for numerical IP address host names
- test1156: enable for hyper
- test1156: fixup the stdout check for Windows
- test1525: tweaked for hyper
- test1526: enable for hyper
- test1527: enable for hyper
- test1528: enable for hyper
- test1554: adjust for hyper
- test1556: adjust for hyper
- test302[12]: run only with the libssh2 backend
- test661: enable for hyper
- tests/CI.md: add more information on CI environments
- tests/data/test302[12]: fix MSYS2 path conversion of hostpubsha256
- tftp: mark protocol as not possible to do over CONNECT
- tool_findfile: updated search for a file in the homedir
- tool_operate: only set SSH related libcurl options for SSH URLs
- tool_operate: warn if too many output arguments were found
- url.c: fix the SIGPIPE comment for Curl_close
- url: check ssl_config when re-use proxy connection
- url: reduce ssl backend count for CURL_DISABLE_PROXY builds
- urlapi: accept port number zero
- urlapi: if possible, shorten given numerical IPv6 addresses
- urlapi: provide more detailed return codes
- urlapi: reject short file URLs
- version_win32: Check build number and platform id
- vtls/rustls: adapt to the updated rustls_version proto
- writeout: fix %{http_version} for HTTP/3
- x509asn1: return early on errors
- zuul.d: update rustls-ffi to version 0.8.2
- zuul: fix quiche build pointing to wrong Cargo