LDC: Also avoid __mulodi4 call for signed longs.

redstar · redstar · commit 341928767e9b · 2015-08-31T07:14:49.000+02:00
diff --git a/runtime/druntime b/runtime/druntime
@@ -1 +1 @@
-Subproject commit 19f37763f8ca883fc8f3a07461dc8fdf7dd7ef38
+Subproject commit 1e20741eb6ec325976db915cbd73de05f059c148
