New branch refactoring the interfaces to support jLEMS
Merge branch 'master' into interfacesRefactoring

Conflicts:
	src/main/java/org/geppetto/solver/sph/SPHSolverService.java
	src/test/java/org/geppetto/solver/sph/internal/KernelTest.java
	src/test/java/org/geppetto/solver/sph/internal/PCISPHSolverTest.java
Merge remote-tracking branch 'origin/master' into interfacesRefactoring
Proper usage of CLBuffer mapping / unmapping
cleaned up tests
added some logging to monitor performance
improved tests: checking for NaN values + checking for overlapping
particles in the initial conditions + moved all files from dropbox to
the repository so there is no downloading files involved
added a test to run the same simulation step by step or in one go and
compare results
reduced number of cycles to minimum to get tests to fail
added a new constructor that takes hardware profile as a parameter so
that we can run with CPU / GPU without hardcoding within the solver
reproduced the NaN issue with only 1 moving particle
minor changes to tests
changed to private a bunch of methods that don't need to be public
commented out a few checks that 'cause out of memory errors when
executing tests during the build
Changed StateSet to StateTree. Added visitors as a way to operate with
the tree.
Tests fix
fixing some copy-paste errors
Update to Java 7
Merge branch 'interfacesRefactoring' of
https://github.com/openworm/org.geppetto.solver.sph into
interfacesRefactoring

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default CPU - commented out line on test that fails on CPU on OSX