jittester hasn't been updated for some time and doesn't work as expected now.

It is needed to update following:
1) path to library, it seems to be broken during forest or library merge
2) excluded methods, System::runFinalizersOnExit(Z) is deprecated now
3) fix TEST.groups, now it is invalid because of double '\\'
4) also it make a sense to generate jit ad aot groups to easier select tests for aot/jit only testing