This ticket is about improving the tools/PointPartitioner.h and introducing some C+11/C+14 features, more specifically:

• Introduce some lambdas to improve readability
• Switch from boost::scoped_array to std::unique_ptr<[]>
• Compute page coordinates directly from bucket offsets rather than recomputing from the first point in the page
• Add a unit test for determinism
• Allow different integer types for indices and offsets
• Introduce new convenience functions for initially populating the partitioner
• Expose a threaded parameter to allow for running it single-threaded