TestEnricher should be called in @BeforeClass

The TestEnricher API could be extended such that static fields can be initialized.

@Inject
public static BundleContext context;

@BeforeClass
public static void beforeClass()

{ System.out.println("BeforeClass: " + context); }

There would be two calls to TestEnricher.

#1 After test class load, but before a call to @BeforeClass.
#2 After instantiation of the test class, but before a call to @Before

(#2 is the current behaviour)