Update NEWS in 8.1 too

Fixed bug #78139 (timezone_open accepts invalid timezone string argument).

Update NEWS in 8.1 too

Merge remote-tracking branch 'derickr/bug74671-dst-c-format' into PHP-8.0

[ci skip] NEWS, UPGRADING

[ci skip] NEWS

Merge branch 'PHP-8.0' into PHP-8.1

Update NEWS

Add IBT support for fiber

Indirect Branch Tracking (IBT) is part of Intel's Control-Flow
Enforcement Technology (CET). IBT is hardware based, forward edge
Control-Flow-Integrity mech

Add IBT support for fiber

Indirect Branch Tracking (IBT) is part of Intel's Control-Flow
Enforcement Technology (CET). IBT is hardware based, forward edge
Control-Flow-Integrity mechanism where any indirect CALL/JMP must target
an ENDBR instruction or suffer #CP.

This commit adds IBT support for fiber:
1. Add endbr32/64 in assembly
2. Inform compiler jump_fcontext may return via indirect branch

Furthermore:
gcc support CET since v8.1 and set it to default since gcc 11. That is,
the ELF header of sapi/cli/php has a property named IBT. However, such
property is lost since PHP8.1 because the assembly introduced by Fiber.
This commit also fixes this.

Closes GH-8339

Signed-off-by: Chen, Hu <hu1.chen@intel.com>
Co-authored-by: Christoph M. Becker <cmbecker69@gmx.de>

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[ci skip] Remove RC1 from 8.1.7 in the NEWS file

Update NEWS with mb_detect_encoding changes

Fix datetime format string to follow POSIX spec in ftp_mdtm()

Closes GH-8259

Bump for 8.1.8-dev

Bump for 8.0.21

Merge branch 'PHP-8.0' into PHP-8.1

* PHP-8.0:
Fix pcntl Haiku build

Fix pcntl Haiku build

guarding SIGIO constant.

Closes GH-8612.

Merge branch 'PHP-8.0' into PHP-8.1

* PHP-8.0:
Fix GH-8538: SoapClient may strip parts of nmtokens

Fix GH-8538: SoapClient may strip parts of nmtokens

When stripping the namespace prefix, we can assume that this does not
contain any colons, while the rest of the name may contain colon

Fix GH-8538: SoapClient may strip parts of nmtokens

When stripping the namespace prefix, we can assume that this does not
contain any colons, while the rest of the name may contain colons.
Hence we must not use `strrchr()` but rather `strchr()` instead.

Closes GH-8543.

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[skip ci] Add NEWS entry

Fix undefined behavior in php_set_inet6_addr

Postfix `++` on `NULL` is undefined behavior

Closes GH-8607

Fix stream_wrapper_unregister() resource leak

Closes GH-8548
Closes GH-8587

Add SO_MEMINFO socket option for gathering socket related info

Build ext/zip as shared library by default on Windows

This allows users to use PECL/zip, which is well maintained and often
brings new features which are not yet available in ext/zip, as

Build ext/zip as shared library by default on Windows

This allows users to use PECL/zip, which is well maintained and often
brings new features which are not yet available in ext/zip, as drop-in
replacement for the official Windows php-src builds.

Closes GH-8549.

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Fixed bug #81565 (date parsing fails when provided with timezones including seconds)

Fixed bug #51987 (Datetime fails to parse an ISO 8601 ordinal date (extended format))