ENH: overset: add value field. Fixes #1334.

src/overset/oversetPolyPatch/oversetFvPatchField.C

@@ -350,4 +350,13 @@ void Foam::oversetFvPatchField<Type>::initEvaluate
 //}
 
 
+template<class Type>
+void Foam::oversetFvPatchField<Type>::write(Ostream& os) const
+{
+    zeroGradientFvPatchField<Type>::write(os);
+    // Make sure to write the value for ease of postprocessing.
+    this->writeEntry("value", os);
+}
+
+
 // ************************************************************************* //

src/overset/oversetPolyPatch/oversetFvPatchField.H

@@ -165,6 +165,12 @@ public:
 //                const direction cmpt,
 //                const Pstream::commsTypes commsType
 //            ) const;
+
+
+        // I-O
+
+            //- Write
+            virtual void write(Ostream& os) const;
 };