relax SVN archive

Fix for the previously committed unit test.

Implemented the dir arg unit test for the state.load() user function.

Implemented the file arg unit test for the state.load() user function.

Added the framework for the unit tests of the prompt.state module.

This inherits 2 unit tests already (which pass).

A few more unused imported eliminated.

Removed some more unused imports.

Removed some unused imports.

Renamed all the unit test directories to start with an underscore.

This is to fix issues with the importing of modules. These directories were clashing with the real
relax directories, making the relax modules in them inaccessible to certain unit tests.

The generic_fns.state module unit test code is now using the base class.

Created by copying a base class for testing both the prompt.state and generic_fns.state modules.