move to osmo-mgw.git: osmo-bsc_mgcp and libmgcp as libosmo-legacy-mgcp

Rewire build and includes to libosmo-legacy-mgcp.

Drop osmo-bsc_mgcp and related python tests, now found in osmo-mgw.git.

libosmo-legacy-mgcp is installed from osmo-mgw, hence add the dependency to
jenkins.sh (so far using the pre_release branch).

Change-Id: Ic99d681759edce11564da62500c2aac5cf5fffe2
diff --git a/src/osmo-bsc_nat/bsc_mgcp_utils.c b/src/osmo-bsc_nat/bsc_mgcp_utils.c
index 7df362f..49050fc 100644
--- a/src/osmo-bsc_nat/bsc_mgcp_utils.c
+++ b/src/osmo-bsc_nat/bsc_mgcp_utils.c
@@ -48,8 +48,8 @@
 #include <openbsc/gsm_data.h>
 #include <openbsc/debug.h>
 #include <openbsc/ipaccess.h>
-#include <openbsc/mgcp.h>
-#include <openbsc/mgcp_internal.h>
+#include <osmocom/legacy_mgcp/mgcp.h>
+#include <osmocom/legacy_mgcp/mgcp_internal.h>
 #include <openbsc/osmux.h>
 
 #include <osmocom/ctrl/control_cmd.h>