D62: rebase: add config to move rebase into a single transaction

[durham (Durham Goode)]

durham abandoned this revision.
durham added a comment.


  Update sent as https://phab.mercurial-scm.org/D135 .  Not sure how to get it to update this diff instead, so abandoning.

REPOSITORY
  rHG Mercurial

REVISION DETAIL
  https://phab.mercurial-scm.org/D62

EMAIL PREFERENCES
  https://phab.mercurial-scm.org/settings/panel/emailpreferences/

To: durham, #hg, martinvonz, phillco
Cc: phillco, mercurial-devel