add notifyReceived + refreshRegisters to java api

[linphone] / mediastreamer2

diff --git a/mediastreamer2 b/mediastreamer2
index 84b9ef050c6abd26446901c2532573f2589a435b..75eb1fcf8d6097e51bcb507be339dd397c6b4dd5 160000 (submodule)
--- a/mediastreamer2
+++ b/mediastreamer2
@@ -1 +1 @@
-Subproject commit 84b9ef050c6abd26446901c2532573f2589a435b
+Subproject commit 75eb1fcf8d6097e51bcb507be339dd397c6b4dd5