ext/xml: Use PKG_CHECK_MODULES to detect the Expat library

Add UPGRADING/NEWS entries

Use PKG_CHECK_MODULES to detect unixODBC

Add enchant pkg-config notice in UPGRADING

Update UPGRADING about LiteSpeed

Update changelogs

Warn about non well-formed arguments in bcmath

Co-Authored-By: Nikita Popov <nikita.ppv@googlemail.com>
Co-Authored-By: Christoph M. Becker <cmbecker69@gmx.de>

Update changelog

Implement spread operator in arrays

RFC: https://wiki.php.net/rfc/spread_operator_for_array

Closes GH-3640.

Deprecate and ignore $version parameter of curl_version()

`curl_version()`[1] (of ext/curl) makes `curl_version_info()`[2] (of
libcurl) available to PHP userland. The latter requires to

Deprecate and ignore $version parameter of curl_version()

`curl_version()`[1] (of ext/curl) makes `curl_version_info()`[2] (of
libcurl) available to PHP userland. The latter requires to pass an
`age` argument which usually is `CURLVERSION_NOW`, so that the
information returned by the runtime matches the declarations used
during compile time. For C programs it is simply necessary to pass
this information, and in rare occasions it might make sense to pass
something else than `CURLVERSION_NOW`. curl.h notes:

| The 'CURLVERSION_NOW' is the symbolic name meant to be used by
| basically all programs ever that want to get version information.

For the PHP binding, using a newer `age` than available at compile time
will neither provide the PHP program more information, nor would using
an older `age` have tangible benefits.

We therefore deprecate the useless `$version` parameter, and if it is
passed nonetheless, we use `CURLVERSION_NOW` instead of the supplied
value, and raise a warning.

[1] <https://www.php.net/manual/en/function.curl-version.php>
[2] <https://curl.haxx.se/libcurl/c/curl_version_info.html>

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Fix typos in upgrade notes

Use PKG_CHECK_MODULES to detect the iODBC library

Use PKG_CHECK_MODULES to detect the systemd library

NEWS and UPGRADING for the scatter filter

Fixed bug #71030

Make sure to always fetch the RHS of a list assignment first, instead
of special casing known self-assignments, which will not detect cases
using references correctl

Fixed bug #71030

Make sure to always fetch the RHS of a list assignment first, instead
of special casing known self-assignments, which will not detect cases
using references correctly.

As a side-effect, it is no longer possible to do something like
byRef(list($x) = $y). This worked by accident previously, but only
if $y was a CV and the self-assignment case did not trigger.
However it shouldn't work for the same reason that byRef($x = $y)
doesn't. Conversely byRef(list(&$x) = $y) and byRef($x =& $y)
continue to be legal.

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Deprecate CURLPIPE_HTTP1

`CURLPIPE_HTTP1` is deprecated and has no effect as of cURL 7.62.0[1].
We therefore deprecate the PHP constant as well, and trigger a warning
that it is no l

Deprecate CURLPIPE_HTTP1

`CURLPIPE_HTTP1` is deprecated and has no effect as of cURL 7.62.0[1].
We therefore deprecate the PHP constant as well, and trigger a warning
that it is no longer supported, if used against cURL 7.62.0 and up.

[1] <https://curl.haxx.se/libcurl/c/CURLMOPT_PIPELINING.html>

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Deprecate left-associative ternary

Deprecate nesting ternary operators without explicit parentheses.

RFC: https://wiki.php.net/rfc/ternary_associativity

Always generate fatal error for LSP failures

RFC: https://wiki.php.net/rfc/lsp_errors

[ci skip] Add password registry RFC to changelog

[ci skip] Move wddx to dedicated section

Add more missing CURL_VERSION_* constants

And also check for CURL_VERSION_* constants in the sync-constants.php
script.

Related to request #72189: Add missing `CURL_VERSION_*` c

Add more missing CURL_VERSION_* constants

And also check for CURL_VERSION_* constants in the sync-constants.php
script.

Related to request #72189: Add missing `CURL_VERSION_*` constants.

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Implement arrow functions

Per RFC: https://wiki.php.net/rfc/arrow_functions_v2

Co-authored-by: Levi Morrison <levim@php.net>
Co-authored-by: Bob Weinand <bobwei9@hotmail.com>

Okay, too quick to merge, these are only relevant to 7.4

NEWS for ext/interbase unbundling

Add UPGRADING entries