http: fix "unused parameter ‘conn’" warning

Follow-up from 7d600ad1c395

Spotted on appveyor

Closes #8465

sha256: Fix minimum OpenSSL version

- Change the minimum OpenSSL version for using their SHA256
implementation from 0.9.7 to 0.9.8.

EVP_sha256() does not appear in the OpenSSL

sha256: Fix minimum OpenSSL version

- Change the minimum OpenSSL version for using their SHA256
implementation from 0.9.7 to 0.9.8.

EVP_sha256() does not appear in the OpenSSL source before 0.9.7h, and
does not get built by default until 0.9.8, so trying to use it for all
0.9.7 is wrong, and before 0.9.8 is unreliable.

Closes https://github.com/curl/curl/pull/8464

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KNOWN_BUGS: remove "slow connect to localhost on Windows"

localhost is not resolved anymore since 1a0ebf6632f88

KNOWN_BUGS: remove "HTTP/3 download is 5x times slower than HTTP/2"

It's not actually a bug. More like room for improvement.

KNOWN_BUGS: remove "HTTP/3 download with quiche halts after a while"

Follow-up to 96f85a0fef694

KNOWN_BUGS: remove "pulseUI vpn" as a problem

We haven't heard about this for a long time and rumours have it they
might have fixed it.

urldata: remove conn->bits.user_passwd

The authentication status should be told by the transfer and not the
connection.

Reported-by: John H. Ayad
Fixes #8449
Closes #8451

gskit: Convert to using Curl_poll

As mentioned in 32766cb, gskit was the last user of Curl_select which is
now gone. Convert to using Curl_poll to allow build to work on IBM i.

gskit: Convert to using Curl_poll

As mentioned in 32766cb, gskit was the last user of Curl_select which is
now gone. Convert to using Curl_poll to allow build to work on IBM i.

Closes #8454

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gskit: Fix initialization of Curl_ssl_gskit struct

In c30bf22, Curl_ssl_getsock was factored out in to a member of
struct Curl_ssl but the gskit initialization was not updated to reflect

gskit: Fix initialization of Curl_ssl_gskit struct

In c30bf22, Curl_ssl_getsock was factored out in to a member of
struct Curl_ssl but the gskit initialization was not updated to reflect
this new member.

Closes #8454

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gskit: Fix errors from Curl_strerror refactor

2f0bb864c1 replaced sterror with Curl_strerror, but the strerror buffer
shadows the set_buffer "buffer" parameter. To keep consistency with

gskit: Fix errors from Curl_strerror refactor

2f0bb864c1 replaced sterror with Curl_strerror, but the strerror buffer
shadows the set_buffer "buffer" parameter. To keep consistency with the
other functions that use Curl_strerror, rename the parameter.

In addition, strerror.h is needed for the definition of STRERROR_LEN.

Closes #8454

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ntlm: remove unused feature defines

They're not used anymore and always supported.

Closes https://github.com/curl/curl/pull/8453

README.md: fix link and layout

replace <a></a> tags and <img></img> tags

Closes #8448

KNOWN_BUGS: fix typo "libpsl"

h2h3: fix compiler warning due to function prototype mismatch

- Add missing const qualifier in Curl_pseudo_headers declaration.

urlapi: handle "redirects" smarter

- avoid one malloc when setting a new url via curl_url_set()
and CURLUPART_URL.
- extract common pattern into a new static function.

urlapi: handle "redirects" smarter

- avoid one malloc when setting a new url via curl_url_set()
and CURLUPART_URL.
- extract common pattern into a new static function.

Closes #8450

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cijobs: pick up circleci configure lines better

circleci: add a job using wolfSSH

Build only, no tests.

Closes #8445

scripts/ciconfig.pl: show used options not available

circleci: add a job using libssh

Closes #8444

runtests: set 'oldlibssh' for libssh versions before 0.9.6

... and make test 1459 check for the different return code then.

Closes #8444

Makefile.am: Generate VS 2022 projects

Follow-up to f13d4d0 which added VS 2022 project support.

Ref: https://github.com/curl/curl/pull/8438

projects: remove support for MSVC before VC10 (Visual Studio 2010)

- Remove Visual Studio project files for VC6, VC7, VC7.1, VC8 and VC9.

Those versions are too old to be maintained

projects: remove support for MSVC before VC10 (Visual Studio 2010)

- Remove Visual Studio project files for VC6, VC7, VC7.1, VC8 and VC9.

Those versions are too old to be maintained any longer.

Closes https://github.com/curl/curl/pull/8442

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projects: add support for Visual Studio 17 (2022)

Closes https://github.com/curl/curl/pull/8438

RELEASE-NOTES: synced

connect: follow-up fix the copyright year