RFR: 8257164: Share LambdaForms for VH linkers/invokers.

[Claes Redestad]

On Thu, 26 Nov 2020 13:13:43 GMT, Vladimir Ivanov <vlivanov at openjdk.org> wrote:

> Introduce sharing of `LambdaForms` for `VarHandle` linkers and invokers.
> It reduces the number of LambdaForms needed at runtime.
> 
> Testing: tier1-4

LGTM!

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Marked as reviewed by redestad (Reviewer).

PR: https://git.openjdk.java.net/jdk/pull/1455