Bug#919628: Apply Julia's LLVM patches

[Mo Zhou]

Hi Sylvestre,

Thank you! I think I'm filing an exception request for julia shortly.

On Fri, Feb 22, 2019 at 08:41:14AM +0100, Sylvestre Ledru wrote:
> Hello,
> 
> I started the work ( https://salsa.debian.org/pkg-llvm-team/llvm-toolchain/commit/408f329cd84ad41cef7fc41ee4ac2b4b4573945f
> ) on that but:
> 
> * some patches didn't apply

That's exactly why I do things about patchset quite slowly...
 
> * some are breaking the builds

Sounds strange. The LLVM embedded in Julia source doesn't fail to build.

> I will try to finish this week end
> 
> Anyway, this should not prevent you to move back to llvm packages as
> 
> I took this fix  "Fix a baseline violation on armhf (Closes: #914268)"

If the release team allows me to upload Julia 1.0.4 (next LTS release),
I'll remove the embedded LLVM (what a relief!)
 
> Cheers,
> 
> S