Update llvm-project submodule

alexcrichton · alexcrichton · commit b3fe51163541 · 2019-10-02T07:47:38.000-07:00
Bring in rust-lang/llvm-project#24 which brings in some wasm improvements related to the bulk-memory proposal
diff --git a/src/llvm-project b/src/llvm-project
@@ -1 +1 @@
-Subproject commit 8adf9bdccfefb8d03f0e8db3b012fb41da1580a4
+Subproject commit 8473db5f2af9dc36aaf6f9b053fcc2e0e6ac8026
