snappyHexMesh: Added -region option

This allows region meshes to be directly generated in the region sub-directory,
providing equivalent functionality to the -region option on blockMesh.

applications/utilities/mesh/manipulation/createBaffles/createBaffles.C

@@ -349,7 +349,6 @@ int main(int argc, char *argv[])
     );
     #include "addDictOption.H"
     #include "addOverwriteOption.H"
-    #include "addDictOption.H"
     #include "addRegionOption.H"
 
     #include "setRootCase.H"