strip-path= path-prefix to be stripped when saving
graft= a graft point *old_path*=*new_path* (can be used morethan once)
"""
-o = options.Options('bup save', optspec)
+o = options.Options(optspec)
(opt, flags, extra) = o.parse(sys.argv[1:])
git.check_repo_or_die()