MethodHandles

[Rémi Forax]

I've continue to implement the backport last evening
and I hope to be able to publish it in 2 weeks (more or less).

Some remarks:
  - there is a bug in the doc comments of MethodHandles.insertArgument(),
    "The pos may range between zero and N (inclusively)"
   Hum, you forget to take a look into the mirror :)
   insert an argument is equivalent to drop a type in the methodType of mh,
  so pos should be between 0 and N exclusively.

 - There are 3 methods find*, findSpecial, findStatic and findVirtual
    but there is no findDynamic that makes a invokedynamic call.

And the *big* question :
Currently, the spec allows a user to create a class that inherits from 
MethodHandle
to create it's own method handle.
What is expected if a user write a methdo void invoke(int, int) and 
returns a
 different MethodType by example, (Object,Object)boolean ?

cheers,
Rémi