Groovy and inner classes

Annotations can now be applied to static inner classes, and Groovy code can be used in "given" and "returns", though Java is still the default.

Initial Release

This is a pre-release, but it's just fine for getting a taste of annotation-based testing.

The examples README.md work, and modifying them to intentionally fail makes them fail the right way. There is very little automated testing at this point—and I appreciate the irony, thank you very much.

egtest-processor-0.1.jar contains the compiler plug-in, egtest-annotations-0.1.jar contains the annotations. If you mix them up and use the annotations as the compiler plug-in, it will fail silently.