subrepo: don't attempt to share remote sources (issue5793)...
subrepo: don't attempt to share remote sources (issue5793)
Untangling _abssource() to resolve the new subrepo relative to the shared
parent's share path, and then either sharing from there (if it exists), or
cloning to that location and then sharing, is probably more than should be
attempted on stable. Absolute subrepo references are discouraged, so for now,
this resumes the behavior prior to
68e0bcb90357 of cloning the absolute subrepo
locally.