git-cvsimport won't run at all with less than cvsps 2.1, because it
lacks the -A flag. But there's no point in preventing people who have an
old cvsps from running the full testsuite.
Tested-by: A Large Angry SCM <gitzilla@gmail.com> Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>