Jan

- remove some obsolete stdout prints

- first version since a while that actually does some useful native calculation. It still has java threads and the pthreads stuff is yet untested.

- the optimization of variables with dirty-flag was invalid because it is not safe to assume that getValue() always occurs later in the phase.

- prepare a lot of stuff for the upcoming almost completely native, multithreaded AdvancerRegistry

- prepare creating JNI threads from native part

- even more profiling preparation

- add more profiling info functions