add patch to LLD to fix deadlock race condition in wasm linker

Patch is getting upstreamed here: https://reviews.llvm.org/D60757
And so this patch can be removed with LLVM 9.0.0.
c8b60538edAndrew Kelley committed on 4/16/2019, 7:56:46 AMparent0a280b6
1 file changedLine totals unavailable