mgcp: use osmo-mgw to switch rtp streams

in the current implementation we still use osmo-bsc_mgcp, which
has many problems and is also obsoleted by osmo-mgw.

integrate osmo-mgw and re-implement the current switching using
an osmo fsm.

Depends: osmo-mgw Iab6a6038e7610c62f34e642cd49c93d11151252c
Depends: osmo-iuh I3c1a0455c5f25cae41ee19229d6daf299e023062
Closes: OS#2605
Change-Id: Ieea9630358b3963261fa1993cf1f3b563ff23538
diff --git a/include/osmocom/msc/Makefile.am b/include/osmocom/msc/Makefile.am
index 88305db..d31883a 100644
--- a/include/osmocom/msc/Makefile.am
+++ b/include/osmocom/msc/Makefile.am
@@ -20,6 +20,7 @@
 	mncc.h \
 	mncc_int.h \
 	msc_ifaces.h \
+	msc_mgcp.h \
 	oap_client.h \
 	openbscdefines.h \
 	a_reset.h \