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
{
"version": 1,
"project": "mercurial",
"project_url": "https://mercurial-scm.org/",
"repo": "..",
"branches": ["default", "stable"],
"environment_type": "virtualenv",
"show_commit_url": "https://www.mercurial-scm.org/repo/hg/rev/",
"benchmark_dir": "benchmarks",
"env_dir": "../.asv/env",
"results_dir": "../.asv/results",
"html_dir": "../.asv/html"
}