Test name shown and more pre-bench warmup
Last 2 points necessary to get boxes performance

That's:
1) fixing https://github.com/miniboxing/miniboxing-plugin/issues/63 (sorry @HaprianVlad, but we needed this fixed for the benchmarks)
2) `-optimize`, which should become useless when using the java runtime (will work on this next week)
```
ImmutableBox.retrieve: Parameters(Generic Box -> miniboxing.example.box.GenericBox@7c67f6fa)                               :    0.96797
ImmutableBox.retrieve: Parameters(Specialized Box -> miniboxing.example.box.SpecializedBox$mcI$sp@57735568)                :    0.81088
ImmutableBox.retrieve: Parameters(Miniboxed Box -> miniboxing.example.box.MiniBox_J@47aa0c85)                              :    0.69379
       MutableBox.add: Parameters(Mutable Generic Box -> miniboxing.example.box.MutableGenericBox@4e871e12)                :    1.44122
       MutableBox.add: Parameters(Mutable Specialized Box -> miniboxing.example.box.MutableSpecializedBox$mcI$sp@3252131b) :    0.72905
       MutableBox.add: Parameters(Mutable Miniboxed Box -> miniboxing.example.box.MutableMiniBox_J@3abb1982)               :    0.73911
```

Ping @MelodyLucid, you might be interested. And you maybe want to merge https://github.com/MelodyLucid/freezing-ironman/pull/1. ;)