[PATCH 2 of 2] histedit: reword message when a changeset produces no changes

[Yuya Nishihara]

On Wed, 02 Mar 2016 16:40:34 -0600, timeless wrote:
> # HG changeset patch
> # User timeless <timeless at mozdev.org>
> # Date 1456958343 0
> #      Wed Mar 02 22:39:03 2016 +0000
> # Node ID 2def64dbbe33c49f84af380e297638911b3e94b0
> # Parent  d74c1e47550daab7959a111b03136518998af86d
> histedit: reword message when a changeset produces no changes
> 
> There are various ways to use histedit such that an item in
> the list of things to perform will not result in a change
> relative to the previous repository state.
> 
> When that happens, histedit does not keep the commit/message.
> 
> This changes the note to try to explain to the user that it
> will not be present in their history.

Sounds good. Pushed to the clowncopter, thanks.