interfaceProperties: rename 'K' to 'interfaceProperties:K' to avoid conflict...

interfaceProperties: rename 'K' to 'interfaceProperties:K' to avoid conflict with the mechanical energy
Resolves bug-report http://www.openfoam.org/mantisbt/view.php?id=1239

src/transportModels/interfaceProperties/interfaceProperties.C

@@ -194,7 +194,7 @@ Foam::interfaceProperties::interfaceProperties
     (
         IOobject
         (
-            "K",
+            "interfaceProperties:K",
             alpha1_.time().timeName(),
             alpha1_.mesh()
         ),