curl_easy_pause.3: mention h2/h3 buffering.

curl.h: mark CURLSSLBACKEND_NSS as deprecated since 8.3.0.

create-dirs.d: clarify it also uses -output-dirs.

cookie: set ->running in cookie_init even if data is NULL.

cookie: remove unnecessary struct fields.

cookie: do not store the expire or max-age strings.

connect: only start the happy eyeballs timer when needed.

connect: expire the timeout when trying next.

configure: replace adhoc domain with `localhost` in tests.

configure: check for the capath by default.

cmake: validate `CURL_DEFAULT_SSL_BACKEND` config value.

cmake: tidy-up `NOT_NEED_LBER_H` detection.

cmake: pre-cache `HAVE_POLL_FINE` on Windows.

cmake: pre-cache `HAVE_BASENAME` for mingw-w64 and MSVC.cmake: move global headers to specific checks.cmake: lib `CURL_STATICLIB` fixes (Windows).cmake: fix unity with Windows Unicode + TrackMemory.cmake: fix unity symbol collisions in h2 builds.cmake: fix unity builds for more build combinations.cmake: fix the help text to the static build option in CMakeLists.txt.cmake: fix stderr initialization in unity builds.cmake: fix missing `zlib.h` when compiling `libcurltool`.cmake: fix duplicate symbols when linking tests.cmake: fix `HAVE_WRITABLE_ARGV` detection.cmake: fix `HAVE_LDAP_SSL`, `HAVE_LDAP_URL_PARSE` on non-Windows.

cmake: disable unity mode with Windows Unicode + TrackMemory.

cmake: detect TLS-SRP in OpenSSL/wolfSSL/GnuTLS.

cmake: detect `sys/wait.h` and `netinet/udp.h`.

cmake: detect `HAVE_GETADDRINFO_THREADSAFE`.

cmake: detect `HAVE_CLOCK_GETTIME_MONOTONIC_RAW`.

cmake: delete old `HAVE_LDAP_URL_PARSE` logic.

cmake: add feature checks for `memrchr` and `getifaddrs`.cmake, configure: also link with CoreServices.cf-socket: simulate slow/blocked receives in debug.build: do not publish `HAVE_BORINGSSL`, `HAVE_AWSLC` macros.build: delete checks for C89 standard headers.bufq: remove Curl_bufq_skip_and_shift (unused).autotools: restore `HAVE_IOCTL_*` detections.autotools: adjust `CURL_CA_PATH` value to CMake.appveyor: rewrite batch in PowerShell + CI improvements.acinclude.m4: Document proper system truststore on FreeBSD.mingw: delete support for legacy toolchain.curl_multi_get_handles: get easy handles from a multi handle.curl: add support for the IPFS protocols via HTTP gateway.

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