Merge branch 'PHP-8.0' into PHP-8.1

* PHP-8.0:
Fix GH-7759: Incorrect return types for hash() and hash_hmac()

Add more specific array return type hints for various extensions - part 2

ext/ftp, ext/gmp, ext/intl

Closes GH-7433

Add more specific array return type hints for various extensions - part 1

ext/bz2, ext/calendar, ext/dba, ext/enchant

Closes GH-7432

Regenerate optimizer info

While the stub definitions were updated, the generated optimizer
info was stale.

Add more specific array return type hints for various extensions - part 6 (#7474)

Add more specific array return type hints for various extensions - part 4 (#7469)

Add more specific array return type hints for various extensions - part 3 (#7467)

Generate optimizer func info from stubs for ext/standard - part 3 (#7426)

Specify a few array func info entries (#7425)

Add support for generating MAY_BE_ARRAY_OF_REF func info flag (#7416)

Ensure stub files are processed in predictable order

The zend_func_infos.h file was generated in a different order for
me.

str_replace() can return the original string

Generate optimizer func info from stubs for ext/standard - part 2 (#7414)

Generate optimizer func info from stubs for ext/standard - part 1 (#7413)

Generate optimizer func info from stubs for various extensions (#7409)

ext/hash, ext/iconv, ext/mbstring, ext/xml, ext/zlib

Generate optimizer func info from stubs for ext/gd and ext/pgsql (#7408)

Generate optimizer func info from stubs for ext/curl, ext/mysqli, ext/pcre (#7407)

Fix a few ext/date return types

Generate optimizer func info from stubs for ext/sodium (#7404)

Generate optimizer func info from stubs for ext/date (#7403)

Generate optimizer func info from stubs for a few extensions - part 2 (#7401)

ext/bcmath, ext/fileinfo, ext/filter, ext/gettext, ext/session

Generate a few missing optimizer function entries from stubs

Fix callable and iterable handling

Generate Zend, ext/spl and ext/json optimizer func info from stubs

Closes GH-7397

Add support for generating optimizer function info from stubs (#7367)