Fix Phobos dependencies on autodecoding

[Vladimir Panteleev]

On Thursday, 15 August 2019 at 21:21:33 UTC, Walter Bright wrote:
> On 8/15/2019 5:09 AM, Vladimir Panteleev wrote:
>> I sent a few PRs for the modules that I am listed as a code 
>> owner of.
>
> Can you please add a link to those PRs in
> https://github.com/dlang/phobos/pull/7130 ?

I added a link to #7130 to the PR derciptions, which should do 
it. Noticed you added some comments just now too doing the same.