ENH: improve controls for Time (issue #910)

- relocate some standard functionality to TimePaths to allow a lighter
  means of managing time directories without using the entire Time
  mechanism.

- optional enableLibs for Time construction (default is on)
  and a corresponding argList::noLibs() and "-no-libs" option

STYLE:

- mark Time::outputTime() as deprecated MAY-2016

- use pre-increment for runTime, although there is no difference in
  behaviour or performance.

tutorials/incompressible/pimpleFoam/laminar/planarPoiseuille/validation/WatersKing/WatersKing.C

@@ -131,7 +131,7 @@ int main(int argc, char *argv[])
         }
         scalar U = UInf*(1.5*(1 - sqr(y)) + sum(A*B));
         file<< runTime.timeName() << token::TAB << U << endl;
-        runTime++;
+        ++runTime;
     }
 
     Info<< nl;