Merged requested to merge rtombs/athena:master-digit into master
Add ComponentAccumulator styled services for RngComps core pseudo-random number generation services. Modify UnifyProperties.py to allow combination of seeds.
Add ConfigFlags styled configuration in BCM_DigitizationConfigFlags.py.
Add ComponentAccumulator styled tools and algorithms for BCM_Digitization in BCM_DigitizationConfigNew.py. -New appended to avoid collision with old style code.
Add tests for RandomServices.py and BCM_DigitizationConfigNew.py (which depends on BCM_DigitizationConfigFlags.py).