First version of logger included
Merge https://github.com/Elizaveta239/vmkit-modified

Conflicts:
	lib/j3/VMCore/Jnjvm.cpp
	lib/vmkit/MMTk/MutatorThread.h
	lib/vmkit/MMTk/VmkitGC.cpp
	mmtk/java/src/org/j3/config/Selected.java.in
	mmtk/java/src/org/j3/mmtk/Factory.java
	mmtk/java/src/org/mmtk/plan/Plan.java
	mmtk/java/src/org/mmtk/plan/copyms/CopyMS.java
	mmtk/java/src/org/mmtk/plan/copyms/CopyMSConstraints.java
	mmtk/java/src/org/mmtk/plan/markcompact/MCConstraints.java
	mmtk/java/src/org/mmtk/plan/marksweep/MS.java
	mmtk/java/src/org/mmtk/plan/semispace/SS.java
	mmtk/java/src/org/mmtk/utility/Log.java
	mmtk/java/src/org/mmtk/utility/statistics/Stats.java
	mmtk/java/src/org/mmtk/vm/VM.java
	mmtk/mmtk-j3/Collection.cpp
	mmtk/mmtk-j3/MMTk_Events.cpp
	mmtk/mmtk-j3/Memory.cpp
	mmtk/mmtk-j3/Scanning.cpp
	mmtk/mmtk-j3/Selected.cpp