* Branched v4.2
Added workaround for Mac OS X < 10.12.0
(Only tested on 10.11.6, lower versions may need more workaround)
* Added *.dSYM to .gitignore
* Added comments for the macosx detection in Makefile
* Fixed indentation, formatting and missing newline at eof
* Moved includes inside include guard
Co-authored-by: elder-n00b <elder-n00b@yandex.com>
