Common/include/DynamicMat.hpp
* Added attribute to flag when should be used the eviction policy.

Common/src/DynamicMat.cpp
* Initializing eviction policy flag where necessary and using it to
condition eviction execution.
* Added some output status messages controlled by a preprocessor
directive.

KMajorityLib/src/KMajority.cpp
* Disabling cache eviction policy execution since it would hurt
performance of flat vocab creation (always sequentially read hence
descriptors cached at the beginning will result evicted).
* Changed subject of two output status messages.
* Added output status messages controlled by a preprocessor directive.