GeometricField: Temporary fields are no longer registered on the database by default

Registration occurs when the temporary field is transferred to a non-temporary
field via a constructor or if explicitly transferred to the database via the
regIOobject "store" methods.

applications/test/fieldDependency/Test-fieldDependency.C

@@ -54,7 +54,7 @@ int main(int argc, char *argv[])
             IOobject::AUTO_WRITE
         ),
         mesh,
-        dimensionedScalar("zero", dimless, 0)
+        dimensionedScalar(dimless, 0)
     );
 
     Info<< "Creating field p\n" << endl;
@@ -69,7 +69,7 @@ int main(int argc, char *argv[])
             IOobject::AUTO_WRITE
         ),
         mesh,
-        dimensionedScalar("zero", dimless, 0)
+        dimensionedScalar(dimless, 0)
     );