Generaly, I was tired that people were fighting over this small insignificant thing, so I spent an hour and created this PHP script that will find all old style constructors and convert them to proper __construct constructors. All you need from github repo is index.php.
php index.php /absolute/path/to/your/root/folder/
WARNING: Don’t forget to backup your files before starting script. And make sure that script has read/write rights on the files.