spAutoLoad: Automatically load classes from multiple sources

This package can be used to manage the automatic load of classes under PHP 5.

It provides two interfaces that define an API for loading classes and handling errors.

Applications must define one or more classes that implements the auto-loading interface.

Multiple auto-load classes may be implemented to handle loading of classes of different libraries.

The main class takes care of loading classes calling each auto-loading class implementation that was added.

An optional class that implements the error handling interface may be defined to handle errors while attempting to load new classes.