Allows static calling of Model subclasses, ignoring namespace info during table name generation.

Model class static property $_table_use_short_name = true allows static calling of the model subclass whilst avoiding the inclusion of namespace information in the auto generated table name.

Resolves issue #88.

Please note that the large number of changes to bootstrap.php is due to indentation changes after wrapping the code with a blank namespace. This was necessary because the new tests required a namespace and the rest wouldn't run without the changes.

The new code is at test/bootstrap.php:110