optimizing java code (calling exp only once for each gaussian)
incrementally (but artificially computing logproba from gaussians)
using real log proba for computation in java
logproba in the opencl version to make it ok in high dimension (float was too small for holding very low exponential proba)
added some experiment with component killing
scala version of DPGMM but at the same time with Pitman Yor process instead of DP
not showing window at all if no display
Merge branch 'pending-logproba'

Conflicts:
	JavaCLTutorial/src/main/java/com/heeere/dpgmm/javacl/GibbsSampler.java
	JavaCLTutorial/src/main/opencl/com/heeere/dpgmm/javacl/GMMKernels.cl
	PYGMMScala/src/main/java/com/heeere/pygmmscala/Main.scala