"JEP Two" draft updated

[John Rose]

Thanks to comments from Vladimir I and Brian, I added
some explanatory text about profiles, and about the
effect of cached profiles.  I’m still keeping it short
and sweet!

On 11 Apr 2025, at 12:01, John Rose wrote:

> Igor’s work on persisting method-profile data, in the AOT cache,
> is coming along.  So I took another look at our draft JEP for that
> work.  Since the JEP boils down to a single flag, turned on by,
> default, there was no need for a long exposition of the ins and
> outs of JVM dynamism theory and practice.  So I made it short
> and sweet.  See what you think:
>
> https://bugs.openjdk.org/browse/JDK-8325147
>
> — John