Update bdwgc with libatomic_ops submodule

jechter · jechter · commit 64b20acdb91f · 2018-05-28T09:17:35.000+02:00
diff --git a/external/bdwgc b/external/bdwgc
@@ -1 +1 @@
-Subproject commit 6f932c1b9af6d6ab9203131a4a14a961def5ee68
+Subproject commit a8ddb045cfe203516362319715f333f97ede470d
