nodemap: code to parse the persistent binary nodemap data
We now have code to read back what we persisted. This will be put to use in
later changesets.
Differential Revision: https://phab.mercurial-scm.org/D7844
{header}
# HG changeset patch
# User {author}
# Date {date|hgdate}
# Node ID {node}
{parent%changesetparent}
{desc}
{diff}