jmx-dev 8038343: Eliminate use of reflection to access JavaBeans Introspector

[Florian Weimer]

* Alan Bateman:

> I'd like to clean this up further and replace the reflection hack with
> a solution that uses the SharedSecrets mechanism. The reason is to
> avoid needing to suppress the access check when we move to modules in
> the future. The webrev with the proposed changes is here:
>
> http://cr.openjdk.java.net/~alanb/8038343/webrev/

Could you use a lambda expression in Introspector?