use separated libosmo-mgcp-client, apply rename to mgcp_client_*

After osmo-mgw changes I8e0b2d2a399b77086a36606f5e427271c6242df1 and
I99f7faab637cfcc22ece64a1dbcbe590f2042187, apply linking of new
libosmo-mgcp-client and renames to drop the "gw" from mgcp_client_*.

Also rename the gsm_network.mgcpgw to mgw, to indicate that the MGCP client is
used to contact the MGW (Media Gateway).

Depends: I8e0b2d2a399b77086a36606f5e427271c6242df1 (osmo-mgw)
         I99f7faab637cfcc22ece64a1dbcbe590f2042187 (osmo-mgw)
Change-Id: I093ad02ca0e532f659447c785e09678b3e6f220d
diff --git a/src/libmsc/a_iface.c b/src/libmsc/a_iface.c
index 7a6000a..3d2013e 100644
--- a/src/libmsc/a_iface.c
+++ b/src/libmsc/a_iface.c
@@ -34,7 +34,7 @@
 #include <osmocom/msc/a_iface.h>
 #include <osmocom/msc/a_iface_bssap.h>
 #include <osmocom/msc/transaction.h>
-#include <osmocom/legacy_mgcp/mgcpgw_client.h>
+#include <osmocom/mgcp_client/mgcp_client.h>
 #include <osmocom/core/byteswap.h>
 #include <osmocom/sccp/sccp_types.h>
 #include <osmocom/msc/a_reset.h>
@@ -401,7 +401,7 @@
 	memset(&rtp_addr_in, 0, sizeof(rtp_addr_in));
 	rtp_addr_in.sin_family = AF_INET;
 	rtp_addr_in.sin_port = osmo_htons(conn->rtp.port_subscr);
-	rtp_addr_in.sin_addr.s_addr = osmo_htonl(mgcpgw_client_remote_addr_n(gsm_network->mgcpgw.client));
+	rtp_addr_in.sin_addr.s_addr = osmo_htonl(mgcp_client_remote_addr_n(gsm_network->mgw.client));
 
 	memset(&rtp_addr, 0, sizeof(rtp_addr));
 	memcpy(&rtp_addr, &rtp_addr_in, sizeof(rtp_addr_in));