Travis is running again

[Johan Engelen via digitalmars-d-ldc]

Hi all,
  I just got Travis back up again: it is now using Ubuntu 14, and 
downloads LLVM binaries from llvm.org (not cached yet, probably 
only a small change needed but I'm done with hacking on this for 
now).

  I changed CircleCI to get LLVM 3.9 from the temporary LLVM APT 
repo set up here: http://llvm-apt.ecranbleu.org/apt/

Summary:
  Travis is testing LLVM 3.5 - 3.8
  CircleCI is testing LLVM 3.9

cheers,
   Johan