Added isValidModelClass() static method and fixed getLoadedModels() in order to resort back to the (classical) approach of class inclusion as a fallback when record classes have different names than their file names. The fallback behaviour of getLoadedModels() is now similar to what is was before the changes introduced in rev 3002.

Added to autoloading to support caching the loaded model paths so we can retrieve them with autoload.

Moved static methods from Doctrine class to Doctrine_Facade and updated the tasks to use Doctrine_Facade.

Fleshing out functionality of CLI system and changed syntax of migration classes to only required a to parameter since we already know where we are coming from.

fixing coding standard $_ infront of private var and removing \e from pcre call due to incompatibility with suhosin

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