JDK 13 RFR of JDK-8146726 : Improve AbstractProcessor to issue warnings for repeated information

[Joe Darcy]

PS Amended webrev at

     http://cr.openjdk.java.net/~darcy/8146726.5/

I added a bit of logic to avoid issuing a duplicate warning when the 
module name is stripped off to avoid spurious warnings in a case like

     "foo/a.B"    "bar/a.B"

The intention of the revision of the semantics of this method in JDK 9 
was to allow convenient and warning-free usage with and without modules.

Thanks,

-Joe

On 4/24/2019 7:08 PM, Joe Darcy wrote:
> Hello,
>
> Returning to JDK-8146726, based on previous review feedback I've 
> changed the title to "Improve AbstractProcessor to issue warnings for 
> repeated information" and reworked the fix:
>
>     http://cr.openjdk.java.net/~darcy/8146726.4/
>
> Thanks,
>
> -Joe
>
>