Move the db_test.c to a specific test directory
diff --git a/configure.in b/configure.in
index e3e8a3b..045d735 100644
--- a/configure.in
+++ b/configure.in
@@ -25,4 +25,5 @@
     tests/timer/Makefile
     tests/sms/Makefile
     tests/gsm0408/Makefile
+    tests/db/Makefile
     Makefile)