adding some trace to debug
Merge branch 'vdev' into develop
Merge branch 'sdev' into develop
Adding timer class and code to collect stats to tabu search.
Adding a stats singleton, and converted tabusearch code to use it.
Merge branch 'vdev' into develop
Merge branch 'sdev' into develop

Conflicts:
	solverTrash/neighborhoods.cpp
	solverTrash/tabusearch.h
commenting non compilable code