HgLoaderFromDisk supports corrupted revisions
When a repository has corrupted revision, the revision and its descendants are not loaded.
This commit only deals with missing filelogs
and configures the exclusion
system.
Missing filelogs
are recoverable errors that should be skipped or
saved as SkippedContent
but being missing the SkippedContent
cannot
be calculated. This point is left for future commits.
Migrated from D4688 (view on Phabricator)