Switch bdwgc repo back to unity-master branch now that all needed changes are in there

jechter · jechter · commit 633d4e73954a · 2018-06-08T08:41:41.000+02:00
diff --git a/external/bdwgc b/external/bdwgc
@@ -1 +1 @@
-Subproject commit 5d8db990f8b307f0f5f6a0f1939a52ba72190e14
+Subproject commit 4d98daa2153d41f75339918422d9d59eb54bb86b
