prefix sub-directories containing libraries with 'lib'
... and make sure tests work again after restructuring
diff --git a/openbsc/src/osmo-bsc_mgcp/Makefile.am b/openbsc/src/osmo-bsc_mgcp/Makefile.am
index 0dc4103..32cc813 100644
--- a/openbsc/src/osmo-bsc_mgcp/Makefile.am
+++ b/openbsc/src/osmo-bsc_mgcp/Makefile.am
@@ -5,5 +5,6 @@
bin_PROGRAMS = bsc_mgcp
bsc_mgcp_SOURCES = mgcp_main.c
-bsc_mgcp_LDADD = $(top_builddir)/src/common/libcommon.a $(top_builddir)/src/mgcp/libmgcp.a \
- $(LIBOSMOVTY_LIBS)
+bsc_mgcp_LDADD = $(top_builddir)/src/libcommon/libcommon.a \
+ $(top_builddir)/src/libmgcp/libmgcp.a \
+ $(LIBOSMOVTY_LIBS)