deleting a group now does same archive operation like deleting repositories. Improve prompt that show number of repos that will be archived together with a group.
"""Various utilities to work with Python < 2.7.Those utilities may be deleted once ``vcs`` stops support for older Pythonversions."""importsysifsys.version_info>=(2,7):unittest=__import__('unittest')else:unittest=__import__('unittest2')