changegroup: factor changelogdone into an argument...
changegroup: factor changelogdone into an argument
The variable was basically tracking whether the current operation
is being performed against the changelog or something else. So
let's just pass such a flag to everything that needs to access it.
I'm still not a huge fan of building changelog awareness into
low-level functions like revision delta generation. But passing
an argument is strictly better than state on the packer instance.
Differential Revision:
https://phab.mercurial-scm.org/D4137
