updates for new thermo and general code tidying

applications/solvers/combustion/PDRFoam/PDRFoam.C

applications/solvers/combustion/PDRFoam/StCourantNo.H

applications/solvers/combustion/PDRFoam/bEqn.H

applications/solvers/combustion/PDRFoam/createFields.H

applications/solvers/combustion/PDRFoam/hEqn.H

applications/solvers/combustion/PDRFoam/huEqn.H

.../PDRFoam/laminarFlameSpeed/SCOPE/SCOPELaminarFlameSpeed.H

applications/solvers/combustion/PDRFoam/pEqn.H

applications/solvers/combustion/XiFoam/XiFoam.C

applications/solvers/combustion/XiFoam/bEqn.H

applications/solvers/combustion/XiFoam/createFields.H

applications/solvers/combustion/XiFoam/hEqn.H

applications/solvers/combustion/XiFoam/huEqn.H

applications/solvers/combustion/XiFoam/pEqn.H

...tions/solvers/combustion/coalChemistryFoam/createFields.H

...ations/solvers/combustion/coldEngineFoam/coldEngineFoam.C

...ications/solvers/combustion/coldEngineFoam/createFields.H

applications/solvers/combustion/coldEngineFoam/hEqn.H

...ations/solvers/combustion/dieselEngineFoam/createFields.H

...cations/solvers/combustion/dieselEngineFoam/createSpray.H