The CVS_SERVER environment variable can cause some of the cvsimport tests
to fail. So unset this variable at the beginning of the test script.
Signed-off-by: Fabian Emmes <fabian.emmes@rwth-aachen.de> Signed-off-by: Lars Noschinski <lars@public.noschinski.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>