Minor modification to allow changes to all diffusion coefficients at once.
Fixed QT_VERSION checks responsible for "no cv display" bug.
check for PhysicalQuantities.h deleted
QT_Version check corrected
adapted to gcc 4.3 - qualifier on return types
adapted to serialization - running version
still testing serialization ...
Changed to deal with recent changes made in Quantities.
New example5. Yet unsure whether this works correctly.
