Supporting Benchmark suites «à la JUnit»

```
Would that be possible to provide an implementation of the interface Benchmark
that enables to build suites of benchmarks that are expected to be run and
reported together. Something like:

public class ArrayBenchmark extends BenchmarkSuite {
public ArrayBenchmark() {
addBenchmark(new ArraySortBenchmark("timeSort"));
addBenchmark(new ArrayCopyBenchmark());
}

public static void main(String[] args) throws Exception {
Runner.main(ArrayBenchmark.class, args);
} }
```

Original issue reported on code.google.com by `romain.r...@gmail.com` on 12 Jun 2011 at 9:15