- added printMemory() method to aid debugging memory used
  - call UpdateInformation() if the mesh has changed
  - automatic activation of "internalMesh", "p", "U"
    is suppressed if a fvMesh is cached. Otherwise,
    appearing/disappearing volFields can cause a crash

  Note:
  The message "had to make up a selection value" that sometimes occurs
  seems to be paraview related (see paraview mailing list),

  - vtkPV3Foam get PrintSelf (reduces number of methods)
  - move output data member from vtkPV3Foam -> PV3FoamReader
    in preparation for rewriting output method
  - roughed in code to track mesh/field changes in preparation for rewriting
    output method
  - progress bar with arbitrary values to give the user something to watch

  - Remove paraFoam/Allwmake leftover junk
  - Always attempt make of libccmio to ensure lnInclude/ exists

  - avoid code duplication in vtkPV3Foam.C and checkTimeOption.H
  - can also be used in Time::findClosestTime(), but didn't touch that