Update the libcompiler_builins submodule

est31 · est31 · commit fc44447bb9f4 · 2017-09-07T09:08:09.000+02:00
Pulls in rust-lang/compiler-builtins#187 for nicer build output :)
diff --git a/src/libcompiler_builtins b/src/libcompiler_builtins
@@ -1 +1 @@
-Subproject commit 6b9281d2b2f0ebb94838814b1e8ace2de4b7035b
+Subproject commit 38ffaf97aa418cc369ca0197a72a0b927cc0f622
