Add Apple/OSX related header files that got removed accidently.
Add Apple/OSX related header files that got removed accidently.

tideways/php-profiler-extension,lisa2lisa/php-profiler-extension,tideways/php-profiler-extension,krakjoe/php-profiler-extension,lisa2lisa/php-profiler-extension,krakjoe/php-profiler-extension