D3870: rebase: add --confirm option

[khanchi97 (Sushil khanchi)]

khanchi97 added inline comments.

INLINE COMMENTS

> rebase.py:895
>          finally:
> -            # no need to store backup in case of dryrun
> -            rbsrt._prepareabortorcontinue(isabort=True, backup=False,
> -                                          suppwarns=True)
> +            if needsabort:
> +                # no need to store backup in case of dryrun

@yuja will this work? Now instead of using "confirm" flag, I added "needsabort" variable.

REPOSITORY
  rHG Mercurial

REVISION DETAIL
  https://phab.mercurial-scm.org/D3870

To: khanchi97, #hg-reviewers
Cc: yuja, mercurial-devel