Thermodynamics: Rationalised the base classes for fluid and solid thermo.

New base class for fluid and solid thermo: veryBasicThermo
Base class for fluid thermo: basicThermo (derived from veryBasicThermo)
Base class for solid thermo: solidThermo (derived from veryBasicThermo)

Note in next commit basicThermo -> fluidThermo, veryBasicThermo -> basicThermo

tutorials/combustion/fireFoam/les/oppositeBurningPanels/constant/panelRegion/chemistryProperties

@@ -15,7 +15,7 @@ FoamFile
 }
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
-solidChemistryModel  ODESolidChemistryModel<constSolidThermoPhysics>;
+solidChemistryModel  ODESolidChemistryModel<hConstSolidThermoPhysics>;
 
 gasThermoModel      gasThermoPhysics;
 

tutorials/combustion/fireFoam/les/oppositeBurningPanels/constant/panelRegion/thermophysicalProperties

@@ -14,7 +14,7 @@ FoamFile
 }
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
-thermoType heSolidThermo<reactingSolidMixture<constIsoSolidTransport<constSolidRad<specieThermo<constSolidThermo<constRho>,sensibleEnthalpy>>>>>;
+thermoType heSolidThermo<reactingSolidMixture<constIsoSolidTransport<constSolidRad<specieThermo<hConstThermo<incompressible>,sensibleEnthalpy>>>>>;
 
 solidComponents
 (
@@ -43,7 +43,7 @@ vCoeffs
         Cp          696;
         Hf          -1.41e6;
     }
-    density
+    equationOfState
     {
         rho         114.7;
     }
@@ -71,7 +71,7 @@ charCoeffs
         Cp          611;
         Hf          0;
     }
-    density
+    equationOfState
     {
         rho         11.5;
     }