Create additional Description.createSuiteDescription builder method.

[scottresnik]

Add the following builder method:
public static Description createSuiteDescription(Class<?> clazz, String name, Annotation... annotations) which calls the private Description(Class<?> clazz, String displayName, Annotation... annotations) constructor.

This would be an alternative to #117.

[kcooney]

We'd probably do this as part of the Description builder work we were working on for JUnit 5.

[scottresnik]

If I created a pull request for this change, do you think it would make it into the 4.x line? It's a pretty simple change.

[kcooney]

I don't think we'll have a 4.13, and we hope to have the Builder work done for 5.0