RFR: JDK-8264488: Improve warning for module names ending with digits

[Alex Buckley]

On 5/29/2023 8:50 AM, Sebastian Stenzel wrote:
> But if you are proposing to split the message into two and add
> complexity to the compiler just for nicer formatting, this would be
> both out of scope of the issue and also something that needs to be
> decided by somebody who is more involved with long term maintenance
> than me. Therefore please CC whoever is responsible for making such
> decisions.

My previous message alluded to the javac maintainers, all of whom are on 
this list:

"One of my colleagues will have to sponsor the PR. I'll leave it to them 
to decide whether a warning in singular form is worthwhile and/or has 
precedent in compiler.properties."

Alex