- Removes need for additional call to info in the main solver code

     sensible enthalpy thermo packages

- Enthalpy source term now retrieved from the chemistry model (scaled by
  kappa for the PaSR model)

- Added chemical enthalpy access function to top level api.
- Re-worked source term for enthalpy equation(s) in chemistry model, and
- Re-worked heat release calculation

STYLE: Using worded dimensions instead of dimensionSet(...)

Each collocated set of coupled points has a single master assigned to it.
However when doing mergePoints on a patch the master does not have to be
on the patch. So now it returns mesh point labels, not patch point labels.

default values for motion state.

- moved sources from fireFoam solver into the thermophysicalModels library
- code clean-up

- removed support for total enthalpy
- much cleaner/improved code for transfer terms

For non-premixed combustion using sensible enthalpy.