[pull] master from php:master - #1178
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If building for ZTS, it seems that local-exec can sneak in:
```
PHP Warning: PHP Startup: Unable to load dynamic library 'intl' (tried: /QOpenSys/pkgs/lib/php-8.6/extensions/intl ( 0509-022 Cannot load module /QOpenSys/pkgs/lib/php-8.6/extensions/intl.
0509-026 System error: A file or directory in the path name does not exist.), /QOpenSys/pkgs/lib/php-8.6/extensions/intl.so ( 0509-130 Symbol resolution failed for /QOpenSys/pkgs/lib/php-8.6/extensions/intl.so because:
0509-189 Module /QOpenSys/pkgs/lib/php-8.6/extensions/intl.so is loaded dynamically,
but the initial-exec model is used by the module
to refer to its own thread-local variables.
0509-191 Examine .loader section relocation entries with the
'dump -Rv' command.
0509-192 Examine .loader section symbols with the
'dump -Tv' command.)) in Unknown on line 0
```
When inspecting the module for initial-exec:
```
$ dump -Rv /QOpenSys/pkgs/lib/php-8.6/extensions/intl.so | grep TLS_In
0x20014370 0x000001fb TLS_InExc 0x0003 _tsrm_ls_cache
```
It seems it only was in `ext/intl/timezone/timezone_class.cpp`. However,
it seems prudent to just not use local-exec for this case since it seems
to be an optimization only really possible on glibc; play it safe
elsewhere. (Perhaps this should be really an ifdef GLIBC check?)
* PHP-8.4: TSRM: don't use initial-exec on AIX (#23145)
* PHP-8.5: TSRM: don't use initial-exec on AIX (#23145)
This aligns with what other deprecation entries read.
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