while(runTime.loop())
{
...
}

idiom.

Demonstrated in the shallowWaterFoam solver.

- track previous time index and to avoid recalculating averages.
- make sure averages are up-to-date before calling write

- added end() method to functionObject, functionObjectList & associated classes
- moved outputFilters from src/sampling -> src/OpenFOAM/db/functionObjects

even when the dot-product of the Reynolds stress and the gradient of velocity is
negative.  Currently this is done by taking the magnitude, another alternative
would be to take only the positive part.

Better properties for CH4N2O
Limiting the temperature to the boiling-point in parcel

- can call start()/execute() manually regardless of the execution status

- added clear() method to functionObjectList. It also gets called by ~Time().
  This should destroy function objects before anything else gets
  destroyed (eg, objectRegistry).

- make functionObjectList mutable so it can change behind our back

- added class OSHA1stream for a stream-based calculation method
- dictionary gets digest() method
- dictionaryEntry tweak: avoid trailing space after dictionary keyword