[PATCH] Annocheck: Ignore more tests for LLVM and Clang

[Nick Clifton]

Hi Tulio,

> Skip tests cf-protection, optimization, property-note, stack-clash and
> stack-prot when LLVM or Clang is found because the plugins for LLVM and
> Clang are not enabled by default on Fedora and CentOS.

Approved and applied - thanks!

Cheers
   Nick