[PATCHv6 0/7] atomic pushes

This patch series adds a flag to git push to update the remote refs atomically.

This series applies on top of origin/mh/reflog-expire It can also be found at github[1].

This series incorporates all suggestions by Eric. Most changes appear in patch 4/7 as it is a complete rewrite compared to v5 of this patch series. 5/7 is new to the series and cleans up the rewrite by moving the function execute_command around.

Any comments are welcome!

Thanks, Stefan

[1] https://github.com/stefanbeller/git/tree/atomic-push-v6

Ronnie Sahlberg (3):
  receive-pack.c: add protocol support to negotiate atomic-push
  send-pack.c: add --atomic command line argument
  push.c: add an --atomic argument

Stefan Beller (4):
  send-pack: Rename ref_update_to_be_sent to check_to_send_update
  receive-pack.c: receive-pack.c: use a single ref_transaction for
    atomic pushes
  receive-pack: move execute_commands_non_atomic before execute_commands
  t5543-atomic-push.sh: add basic tests for atomic pushes

 Documentation/git-push.txt                        |   7 +-
 Documentation/git-send-pack.txt                   |   7 +-
 Documentation/technical/protocol-capabilities.txt |  13 +-
 builtin/push.c                                    |   2 +
 builtin/receive-pack.c                            | 165 +++++++++++++++-----
 builtin/send-pack.c                               |   6 +-
 remote.h                                          |   3 +-
 send-pack.c                                       |  66 +++++++-
 send-pack.h                                       |   3 +-
 t/t5543-atomic-push.sh                            | 178 ++++++++++++++++++++++
 transport.c                                       |   5 +
 transport.h                                       |   1 +
 12 files changed, 405 insertions(+), 51 deletions(-)
 create mode 100755 t/t5543-atomic-push.sh