Merge Request: LLVM Code Generator for GHC

[David Terei]

David Peixotto wrote:
> I "deprecated" the LlvmBackend page in favor of Commentary/Backends/LLVM by putting a forwarding reference to the latter. Otherwise I left the current LlvmBackend page intact, but can remove it once David agrees the important info has been transferred.

OK, have checked over the new page and its all fine, good to remove the 
old one.