Setup a benchmark suite

[szabolcsmaj]

In order to measure the performance impact of GhostWriter and various run-time environments setup a benchmark suite.

The suite should contain some basic micro benchmarks to contain a fixed point to which we can refer to at any stage.

Introducing "real-world examples" is also required. For example compile JRuby with GhostWriter and execute JRuby tests. Compare it to the not traced version...

The basic suite needs to be completed until the fist release and extended as we go on...