D3187: phase: add dry-run functionality

[av6 (Anton Shestakov)]

av6 added inline comments.

INLINE COMMENTS

> commands.py:3872
> +        if opts['dry_run']:
> +            raise error.Abort(_("can't use --dryrun when no targetphase"))
>          # display

`"cannot use --dry-run without target phase"`

REPOSITORY
  rHG Mercurial

REVISION DETAIL
  https://phab.mercurial-scm.org/D3187

To: khanchi97, pulkit, #hg-reviewers
Cc: av6, mercurial-devel