Merge Power policy interface
Adds Power Policy based on Dynamic Duty Cycle Modulation in NRM (See Issue #10 (closed)).
Dynamic Duty Cycle Modulation (DDCM) is core-specific and is mostly available on Intel architectures (even pre-Haswell).
DDCM based power policy is aimed to mitigate workload imbalance in parallel applications that use barrier synchronizations (E.g. MPI). It reduces the duty cycle of CPUs not on the critical path of execution thereby reducing energy with little or no adverse impact on performance.
Closes #11 (closed)