Update c reference to add support for Twin over AMQP

ewertons · ewertons · commit 9f2f5e5da94f · 2017-08-02T15:23:08.000-07:00
diff --git a/c b/c
@@ -1 +1 @@
-Subproject commit 49bc83f055c4d283f3a7ebc40a59e083e3d9eeb3
+Subproject commit 4f08f1fae32837676da03a3458f86aa0e4f96afb
