Set up GNU Autotest infrastructure

Test files are moved from CommonLibs/ to tests/CommonLibs/.
Some tests are disabled in autotest because they generate timedate
related output which cannot exactly match against expected output.

Change-Id: I3d6ba625968be09297642d18090c496490e9b8fc
diff --git a/Makefile.am b/Makefile.am
index 658eae4..1e659a0 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -30,7 +30,8 @@
 SUBDIRS = \
 	CommonLibs \
 	GSM \
-	Transceiver52M
+	Transceiver52M \
+	tests
 
 EXTRA_DIST = \
 	autogen.sh \