PHP Namespace Autoload : Autoload classes with namespaces from directories

This class can autoload classes with namespaces from directories.

It can register a class autoload function that takes the class name eventually with a namespace prefix, splits the namespace parts and assembles it to form a class path that maps its namespace part into directories.

Then it checks if a script file exists in the assembled path with the suffix .class.php. If it exists, the class script is loaded.