D3684: shelve: merge in obsshelve changes implemented at facebook

[durin42 (Augie Fackler)]

durin42 added a comment.


  In https://phab.mercurial-scm.org/D3684#58074, @lothiraldan wrote:
  
  > We have an implementation of shelve without strip nor obsmarkers.
  
  
  Can we see that now? Otherwise I'm going to lobby to land this in the name of having something done.

REPOSITORY
  rHG Mercurial

REVISION DETAIL
  https://phab.mercurial-scm.org/D3684

To: durin42, #hg-reviewers
Cc: lothiraldan, mercurial-devel