Replace multiple elapsed time methods with single elapsed time method.

[joshuaplusone]

Replace

double getIdleTime();
double getStartingTime();
double getResettingTime();
double getExecuteTime();
double getHeldTime();
double getHoldingTime();
double getUnholdingTime();
double getSuspendedTime();
double getSuspendingTime();
double getUnsuspendingTime();
double getCompleteTime();
double getStoppedTime();
double getClearingTime();
double getStoppingTime();
double getAbortedTime();
double getAbortingTime();

with

double getElapsedTime(StatesEnum state) const;