JDK 8 code review request for 8005298 Add FunctionalInterface type to the core libraries

[Joe Darcy]

Hello,

As discussed over on one of the Project Lambda lists [1], we're adding 
an interface type to the platform to explicitly mark interface types as 
being functional interfaces suitable for use in lambda expressions.  
Please review the addition of this new type:

     http://cr.openjdk.java.net/~darcy/8005298.0/

Follow-up work will add @FunctionalInterface annotations to appropriate 
platform classes.

Thanks,

-Joe

[1] 
http://mail.openjdk.java.net/pipermail/lambda-libs-spec-experts/2012-December/000846.html