switched to python 2.7

git-svn-id: http://openmesh.org/svnrepo/OpenMesh@1015 fdac6126-5c0c-442c-9429-916003d36597
removed redundant code and replaced spaces with tabs

git-svn-id: http://openmesh.org/svnrepo/OpenMesh@1016 fdac6126-5c0c-442c-9429-916003d36597