bsc/test: Add tests for gsm_subscriber base

This commit adds test for the generic part of gsm_subscriber like
reference counting and flag usage.

Sponsored-by: On-Waves ehf
diff --git a/openbsc/tests/subscr/Makefile.am b/openbsc/tests/subscr/Makefile.am
new file mode 100644
index 0000000..4f96dc9
--- /dev/null
+++ b/openbsc/tests/subscr/Makefile.am
@@ -0,0 +1,18 @@
+AM_CPPFLAGS = $(all_includes) -I$(top_srcdir)/include
+AM_CFLAGS=-Wall -ggdb3 $(LIBOSMOCORE_CFLAGS) $(LIBOSMOGSM_CFLAGS) $(LIBOSMOABIS_CFLAGS) $(LIBSMPP34_CFLAGS) $(COVERAGE_CFLAGS)
+AM_LDFLAGS = $(COVERAGE_LDFLAGS)
+
+EXTRA_DIST = subscr_test.ok
+
+noinst_PROGRAMS = subscr_test
+
+subscr_test_SOURCES = subscr_test.c
+subscr_test_LDADD   =	$(top_builddir)/src/libbsc/libbsc.a \
+			$(top_builddir)/src/libmsc/libmsc.a \
+			$(top_builddir)/src/libbsc/libbsc.a \
+			$(top_builddir)/src/libtrau/libtrau.a \
+			$(top_builddir)/src/libcommon/libcommon.a \
+			$(LIBOSMOCORE_LIBS) $(LIBOSMOABIS_LIBS) \
+			$(LIBOSMOGSM_LIBS) $(LIBSMPP34_LIBS) $(LIBOSMOVTY_LIBS)
+# -ldbi
+