Use Checksum API to verify core integrity

This is a feature request.
Using the [Checksum API](http://api.wordpress.org/core/checksums/1.0/?version=3.7.1&locale=en_US) it would be nice to have a new core command to check WP integrity.
`check`
Usecase: detect compromised sites

Then we'd be a bit SOL. Can you open a new issue so we can discuss the options?