Planned improvements to multi-catch and more precise rethrow

[Joe Darcy]

Joe Darcy wrote:
> We've been working on some improvements to the multi-catch with more 
> precise rethrow feature [1] and are planning to push the changes soon.

Maurizio has now pushed the changes into the JDK 7 TL repo:
    6993963: Project Coin: Use precise exception analysis for 
effectively final catch parameters
    http://hg.openjdk.java.net/jdk7/tl/langtools/rev/f2048d9c666e

-Joe