[PATCH 1 of 5] devel: officially deprecate old style revset

[Pierre-Yves David]

On 05/11/2016 01:03 PM, timeless wrote:
> On Wed, May 11, 2016 at 3:38 AM, Pierre-Yves David
> <pierre-yves.david at ens-lyon.org> wrote:
>> When we introduce the develwarning, we did not had an official deprecation API
> When we introduced develwarning, we did not have an official deprecation API
Sure, can this be fixed in flight?