[PATCH 1 of 5 V2] obsolete: add isenabled function for option checking

[Pierre-Yves David]

On 10/15/2014 01:03 PM, Durham Goode wrote:
> # HG changeset patch
> # User Durham Goode <durham at fb.com>
> # Date 1413317855 25200
> #      Tue Oct 14 13:17:35 2014 -0700
> # Node ID a22ff14b5ff64123d37e1fc42cad86cf76a4c3b1
> # Parent  75d0edb68b417964110e3fcd69187c867f31a119
> obsolete: add isenabled function for option checking

I'll probably push this series later today after a renames of 
`experimental.obsoleteoptions` to `experimentation.evolution` and some 
tests addition.

CCing Matt to give him time for growling if applicable.

-- 
Pierre-Yves David