RFR: Direct LambdaMetaFactory invocation from CallSite significantly improves lambda linkage performance

[Sergey Kuksenko]

Please review the webrev at:

http://cr.openjdk.java.net/~skuksenko/jsr335/8024630/webrev.00/

LambdaMetafactory is is a quite frequent bootstrap method for
invokedynamic in JDK8.
We can do direct method (LambdaMetafactory) invocation as fastpath when
proved that bootstrap MethodHandle points to LambdaMetafactory.
The modification gives +10% - +35% to lambda linkage performance
(depends on amount of lambdas).

-- 
Best regards,
Sergey Kuksenko