OpenFOAM: Updated all libraries, solvers and utilities to use the new const-safe tmp

The deprecated non-const tmp functionality is now on the compiler switch
NON_CONST_TMP which can be enabled by adding -DNON_CONST_TMP to EXE_INC
in the Make/options file.  However, it is recommended to upgrade all
code to the new safer tmp by using the '.ref()' member function rather
than the non-const '()' dereference operator when non-const access to
the temporary object is required.

Please report any problems on Mantis.

Henry G. Weller
CFD Direct.

applications/utilities/postProcessing/dataConversion/foamToEnsight/ensightField.C

@@ -53,8 +53,8 @@ volField
         (
             meshSubsetter.interpolate(vf)
         );
-        tfld().checkOut();
-        tfld().rename(vf.name());
+        tfld.ref().checkOut();
+        tfld.ref().rename(vf.name());
         return tfld;
     }
     else
@@ -729,7 +729,7 @@ void ensightField
         (
             volPointInterpolation::New(vf.mesh()).interpolate(vf)
         );
-        pfld().rename(vf.name());
+        pfld.ref().rename(vf.name());
 
         ensightPointField<Type>
         (