[php-src] Issue #15292: Dynamic AVX detection is broken for MSVC

Issue: https://github.com/php/php-src/issues/15292 Author: cmb69 ### Description https://github.com/php/php-src/commit/4e30ab33d84232ba2686e7ed5b125861db63142d made a general important improvement for proper AVX detection, but unfortunately guarded the relevant code with https://github.com/php/php-src/blob/c68b43c71bc32eafd3597184a9971caa4157ba21/Zend/zend_cpuinfo.c#L76 Neither of these macros are pre-defined for MSVC, what results in the following function definition: https://github.com/php/php-src/blob/c68b43c71bc32eafd3597184a9971caa4157ba21/Zend/zend_cpuinfo.c#L109-L111 That means that even though AVX and even AVX2 are supported by the processor, no support is flagged, and the optimized implementations are never called. If I change the guard code to ````c #if defined(_WIN32) || defined(_WIN64) ```` AVX detections works on my machine (x64, have not tested x86 yet), but I'm not sure whether these would be the appropriate macros, or whether ARM needs special treatment. Maybe someone else knows, or could test it (I don't have an ARM available). In my opinion, we need to fix this for master and may consider to target a lower branch (maybe backport only after a while, when PHP 8.4 has been sufficiently tested). ### PHP Version PHP 7.4+ ### Operating System Windows