Bump to Java.Interop/master/15cf8c1, mono/2017-12/fbc4f05 (#1317)

MSylvia · jonpryor · commit 70ccc834f3f2 · 2018-02-16T11:56:35.000-05:00
Context: mono/mono#6948 Harmonizes on cecil/mono-2017-12/dfee11e.
diff --git a/external/Java.Interop b/external/Java.Interop
@@ -1 +1 @@
-Subproject commit 0841c32fdb0e1cb30d27ff45123e8e8d339e2390
+Subproject commit 15cf8c12176d6b46995732b9702f09d60135b976
diff --git a/external/mono b/external/mono
@@ -1 +1 @@
-Subproject commit 2ad3f0bf9ed6b0943c302cc3d9a917e0782b5328
+Subproject commit fbc4f0546d3994984f775b1a7ade5289ae6bfe92
