createPatch: writing the cyclic match OBJ files is now optional

The new optional switch 'writeCyclicMatch' can be set to 'true' to enable the writing of
the cyclic match OBJ files; defaults to 'false'.

Patch contributed by Bruno Santos
Resolves patch request https://bugs.openfoam.org/view.php?id=2685

tutorials/multiphase/interPhaseChangeDyMFoam/propeller/system/createPatchDict

@@ -12,6 +12,7 @@ FoamFile
     class       dictionary;
     object      createPatchDict;
 }
+
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
 // Do a synchronisation of coupled points after creation of any patches.
@@ -19,6 +20,9 @@ FoamFile
 //       with transformations (i.e. cyclics).
 pointSync false;
 
+// Optional: Write cyclic matches into .obj format; defaults to false.
+writeCyclicMatch  false;
+
 // Patches to create.
 patches
 (