#10 TestOrder does not work under Java 7

[Mark Utting]

The TimingTestSuiteTest.testGetOrder() test fails (usually, but not always) under Java 7.
This is because the TestOrder API relies on Class.getDeclaredMethods returning methods in their order of declaration, but under Java 7, it now returns the methods in a non-deterministic order (which was always the documented behaviour).

Fixing this looks like it might require changing the API of TestOrder so that it does not rely on numbered methods, which is a not insignificant change.