API fixups and cleanups.

[linphone] / mediastreamer2

diff --git a/mediastreamer2 b/mediastreamer2
index eeaab2239d6545f18d5219b62adda8d1dda3b104..44992c096673ace578ba5248db7019ba1e0d78d5 160000 (submodule)
--- a/mediastreamer2
+++ b/mediastreamer2
@@ -1 +1 @@
-Subproject commit eeaab2239d6545f18d5219b62adda8d1dda3b104
+Subproject commit 44992c096673ace578ba5248db7019ba1e0d78d5