Make ValidatorServiceProvider work with both 2.1 and 2.2 of symfony/validator

Closes #584, #585.
merged branch igorw/validator-2.2 (PR #606)

This PR was merged into the master branch.

Commits
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310d316 Make ValidatorServiceProvider work with both 2.1 and 2.2 of symfony/validator

Discussion
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Make ValidatorServiceProvider work with both 2.1 and 2.2 of symfony/validator

Closes #584, #585.

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by davedevelopment at 2013-01-23T14:59:35Z

:+1: Let's get this in