This adds tests for the atomic push option.
The first four tests check if the atomic option works in
good conditions and the last three patches check if the atomic
option prevents any change to be pushed if just one ref cannot
be updated.
Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Stefan Beller