[PATCH 1 of 2] changegroup: introduce cg3, which has support for exchanging treemanifests

[Augie Fackler]

> On Dec 17, 2015, at 3:41 PM, Gregory Szorc <gregory.szorc at gmail.com> wrote:
> 
> On Thu, Dec 17, 2015 at 12:21 PM, Augie Fackler <raf at durin42.com> wrote:
>> # HG changeset patch
>> # User Augie Fackler <augie at google.com>
>> # Date 1449851029 18000
>> #      Fri Dec 11 11:23:49 2015 -0500
>> # Node ID 73536ee369468a4e2e8a7c5d913f4eac88536907
>> # Parent  4eeef1b2d689bad18f473b5e118cca061f6ca560
>> # EXP-Topic cg3
>> changegroup: introduce cg3, which has support for exchanging treemanifests
>> 
> I don't suppose I can bother you to update the documentation in mercurial/help/internals/changegroups.txt to reflect the new format?
> 
> <ducks>

Yeah, I can do that as a 3rd patch on the stack. I’ll do so and roll a v2 (tomorrow, probably).