histedit: discard meaningless comment about 'hexlify node' Refactoring in 26b41a902195 made this comment meaningless. The node gotten by "discovery.findcommonoutgoing()" is hexlified in "between()" by "repo.set('%n::%n', old, new)".

histedit: add description about "histedit --outgoing" to command help Before this patch, there is no explicit description that argument is treated as the URL of the destination repository when "--outgoing" is specified. This patch adds description about "histedit --outgoing" to command help of it.

histedit: add description about basic histedit function to command help Before this patch, there is no explicit description that histedit edits changesets between specified ancestor and the parent of the working directory: users may notice it by error message "REV is not an ancestor of working directory". This patch adds description about basic histedit function to command help of it. This patch uses term "ancestor" instead of "parent", because it seems to be more suitable, and almost all (error) messages already use it.

httpclient: import 0d1b0a8bc549 to fix bug involving late-arriving RST after a response After a day of hunting this defect, I'm now unable to reproduce the bug without this patch applied. Regardless, this should fix the problem I was observing with wireshark. Hopefully this fixes any flakiness in the buildbot from http2.