ENH: porosityModels - now derived from regIOobject instead of meshObject

src/finiteVolume/cfdTools/general/porosityModel/porosityModel/porosityModel.C

@@ -88,7 +88,17 @@ Foam::porosityModel::porosityModel
     const word& cellZoneName
 )
 :
-    MeshObject<fvMesh, Foam::UpdateableMeshObject, porosityModel>(mesh),
+    regIOobject
+    (
+        IOobject
+        (
+            name,
+            mesh.time().timeName(),
+            mesh,
+            IOobject::NO_READ,
+            IOobject::NO_WRITE
+        )
+    ),
     name_(name),
     mesh_(mesh),
     dict_(dict),

src/finiteVolume/cfdTools/general/porosityModel/porosityModel/porosityModel.H

@@ -36,7 +36,6 @@ SourceFiles
 #ifndef porosityModel_H
 #define porosityModel_H
 
-#include "MeshObject.H"
 #include "fvMesh.H"
 #include "dictionary.H"
 #include "fvMatricesFwd.H"
@@ -56,7 +55,7 @@ namespace Foam
 
 class porosityModel
 :
-    public MeshObject<fvMesh, UpdateableMeshObject, porosityModel>
+    public regIOobject
 {
 private: