[PATCH] [LIT] Add SuffixDispatchTest for use in libc++ and libc++abi tests.

[Eric Fiselier]

>>! In D6206#29, @ddunbar wrote:
> For my own context, is part of the motivation here that you want to share
> this test format between multiple repositories?
> 
>  - Daniel

Gaa Sorry @ddunbar, I entirely missed this. 

Yes. both libc++ and libc++abi will use SuffixDispatchTest. They both currently have different versions of basically the same code.

http://reviews.llvm.org/D6206