Move static checking descriptions of bounds to the end of the specification.

[dtarditi]

Currently we describe bounds declarations and follow it with a chapter providing a long, detailed description of the static checking of bounds declarations. It would be better to move that to the end of the specification. The current organization disrupts the flow of the specification for readers who are mostly interested in the extension features.

[dtarditi]

In-progress: see this branch: https://github.com/checkedc/checkedc/tree/checkedc-v1