Rename interpreter test files for new test framework.

[Issue: #395]
Delete duplicate interpreter tests.

[Issue: #395]
Delete unused tests.

[Issue: #395]
Initial work on external interpreter tests under ntf.

[Issue: #395]
Add specific test update property to each test.

[Issue: ]
Delete unused test files.

[Issue: #395]
Migrate all interpreter results to JSON format.

[Issue: #395]
Add message class for result processing.

[Issue: #395]
Delete result compatibility code.

[Issue: #395]