Fix problem with OF 2.3. Creation of wedge now checks whether this is really a wedge

git-svn-id: svn://svn.code.sf.net/p/openfoam-extend/svn/trunk/Breeder_2.0/utilities/mesh/manipulation/MakeAxialMesh@2054 e4e07f05-0c2f-0410-a05a-b8ba57e0c909