pull: avoid race condition with 'hg pull --rev name --update' (issue4706) The previous scheme was: 1) lookup node for all pulled revision, 2) pull said node 3) lookup the node of the checkout target 4) update the repository there. If the remote repo changes between (1) and (3), the resolved name will be different and (3) crash. There is actually no need for a remote lookup during (3), we could just set the value in (1). This prevent the race condition and save a possible network roundtrip.

revert: add an experimental config to use inverted selection We had a discussion on the list about the interactive ui for revert. This patch adds a flag to allow people to test the second alternative (referred to as proposition 2 on the mailing list). It effectively inverts the signs in the

bundle2: stop capturing output for ssh again This backout 36111f98f23d since we can have real time output with ssh again. The tests change is not backed-out because it was a test output fix.

sshpeer: use the doublepipe object for the server to client channel This restores real-time output from ssh server while waiting for protocol data sent by the server.