cURL

What's new in this version:

Fixed:
- all: remove FIXME and TODO comments
- asyn-thread: fix build with `CURL_DISABLE_SOCKETPAIR`
- asyn-thread: fix HTTPS RR crash
- asyn-thread: fix the returned bitmask from Curl_resolver_getsock
- asyn-thread: survive a c-ares channel set to NULL
- build: add tool_hugehelp.c into IBMi build
- checksrc.pl: warn on FIXME/TODO comments
- cmake/Find: set `<Modulename>_FOUND` for compatibility when found via `pkg-config`
- cmake: add integration tests, run them in CI
- cmake: always reference OpenSSL and ZLIB via imported targets
- cmake: avoid unnecessary `-L` for implicit link dirs
- cmake: drop `LDAP_DEPRECATED=1` macro, to sync with autotools
- cmake: fix `HAVE_GETHOSTBYNAME_R_*` detections with `CURL_WERROR=ON`
- cmake: fix to detect `HAVE_OPENSSL_SRP` in MSVC UWP builds
- cmake: fix/add missing feature detections for Windows/MS-DOS
- cmake: initialize variables where missing
- cmake: lib order fixes for picky linkers (e.g. binutils `ld`)
- cmake: normalize before matching paths with syspaths
- cmake: respect `GNUTLS_CFLAGS` when detected via `pkg-config`
- cmake: respect `GNUTLS_LIBRARY_DIRS` in `libcurl.pc` and `curl-config`
- cmake: save a line with `CMAKE_C_IMPLICIT_LINK_DIRECTORIES` exclusion
- cmake: tidy up string append and list prepend syntax
- configure/cmake: check for realpath
- configure/cmake: set asyn-rr a feature only if httpsrr is enabled
- content_encoding: #error on too old zlib
- curl_global_sslset.md: Add SSL backend names
- CURLOPT_SSH_KNOWNHOSTS.md: strongly recommend using this
- CURLSHOPT_SHARE.md: adjust for the new SSL session cache
- docs: better explain multi-part byte range behavior
- docs: use valid example domain names
- generate.bat: remove curl_get_line.c from the curlx file list
- header.md: mention `Authorization:` and `Cookie:` special treatment
- imap: TLS upgrade fix
- INTERNALS: fix c-ares, as we actually support 1.6.0 or later
- ldap: drop support for legacy Novell LDAP SDK
- lib: include necessary headers for `inet_ntop`/`inet_pton`
- lib: silence LibreSSL collision warning on non-MSVC Windows
- libssh2: comparison is always true because rc <= -1
- libssh2: raise lowest supported version to 1.2.8
- libssh: drop support for libssh older than 0.9.0
- libssh: silence `-Wconversion` with a cast (Windows 32-bit)
- netrc: return code cleanup, fix missing file error
- openssl-quic: ignore ciphers for h3
- openssl: fix out of scope variables in goto
- pop3: TLS upgrade fix
- runtests: fix the disabling of the memory tracking
- runtests: quote commands to support paths with spaces
- scache: add magic checks
- smb: silence `-Warray-bounds` with gcc 13+
- smtp: TLS upgrade fix
- SPONSORS.md: clarify that we don't promise goods or services
- test1516: avoid failure due to spaces in path
- test2080: simplify, avoid the null byte
- tests: fix test 558, 1330 for MSVC, allow TrackMemory with MSVC in cmake
- tidy-up: make per-file `ARRAYSIZE` macros global as `CURL_ARRAYSIZE`
- tool_cfgable: sort struct fields by size, use bitfields for booleans
- tool_getparam: add "TLS required" flag for each such option
- tool_progress: fix percent output of large parallel transfers
- tool_ssls: switch to tool-specific get_line function
- verbose.md: mention how carriage-return might occur in headers
- vquic: make the "disable GSO" use infof, not failf
- vtls: fix multissl-init
- vtsl: eliminate 'data->state.ssl_scache'
- wakeup_write: make sure the eventfd write sends eight bytes
- wolfssl: silence compiler warning (MSVC 2019), simplify existing