Implement IuCS (large refactoring and addition)

osmo-nitb becomes osmo-msc
add DIUCS debug log constant
add iucs.[hc]
add msc vty, remove nitb vty
add libiudummy, to avoid linking Iu deps in tests
Use new msc_tx_dtap() instead of gsm0808_submit_dtap()
libmgcp: add mgcpgw client API
bridge calls via mgcpgw

Enable MSC specific CTRL commands, bsc_base_ctrl_cmds_install() still needs to
be split up.

Change-Id: I5b5b6a9678b458affa86800afb1ec726e66eed88
diff --git a/tests/mgcp/Makefile.am b/tests/mgcp/Makefile.am
index 4b18036..af9216f 100644
--- a/tests/mgcp/Makefile.am
+++ b/tests/mgcp/Makefile.am
@@ -22,10 +22,13 @@
 EXTRA_DIST = \
 	mgcp_test.ok \
 	mgcp_transcoding_test.ok \
+	mgcpgw_client_test.ok \
+	mgcpgw_client_test.err \
 	$(NULL)
 
 noinst_PROGRAMS = \
 	mgcp_test \
+	mgcpgw_client_test \
 	$(NULL)
 if BUILD_MGCP_TRANSCODING
 noinst_PROGRAMS += \
@@ -70,3 +73,21 @@
 	-lrt \
 	-lm \
 	$(NULL)
+
+mgcpgw_client_test_SOURCES = \
+	mgcpgw_client_test.c \
+	$(NULL)
+
+mgcpgw_client_test_LDADD = \
+	$(top_builddir)/src/libbsc/libbsc.a \
+	$(top_builddir)/src/libmgcp/libmgcp.a \
+	$(top_builddir)/src/libcommon/libcommon.a \
+	$(LIBOSMOCORE_LIBS) \
+	$(LIBOSMOGSM_LIBS) \
+	$(LIBOSMOSCCP_LIBS) \
+	$(LIBOSMOVTY_LIBS) \
+	$(LIBRARY_DL) \
+	$(LIBOSMONETIF_LIBS) \
+	-lrt \
+	-lm  \
+	$(NULL)