doctrine/common — pull request #164 by Ocramius (2012-07-10 00:54:03+00:00)
Title: Porting 'default driver' functionality from ORM

This PR moves the logic that has been recently added to ORM's `Doctrine\ORM\Mapping\Driver\DriverChain` that allows it to have a default "fallback" driver into Doctrine\Common namespace.

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