PHPOffice/PHPExcel — pull request #368 by TravisPaul (2014-05-14 20:36:26+00:00)
Title: Prevent autoload clash when previous code has used spl_autoload_register

I was having difficulties using PHPExcel in my project as we already have an autoloader and we did not use __autoload function. This change tells PHPExcel to prepend its autoloader on the autoload stack instead of appending it.