manifest: define and implement addgroup() on manifestlog...
manifest: define and implement addgroup() on manifestlog
Changegroup code was bypassing our manifest interface and calling a
method on the private revlog attribute.
This commit formalizes the interface for adding a group of
revisions from deltas and changes the changegroup code to use it.
This enables alternate manifest storage to work with changegroup
application operations (like `hg unbundle` and `hg pull`).
Differential Revision:
https://phab.mercurial-scm.org/D3883
