* Add chunk notion for parallelization
* Allows Node desc to implement custom updateInternals
* CameraInit node implement a specific updateInternals to update the
input image list
* FeatureExtraction, FeatureMatching, DepthMap, DepthMapFilter:
implement parallelization
* ensure that identical graphs have the same UIDs
* ensure that multiview pipeline graphs with different input images have
different UIDs on all output attributes