tests: Convert tests/Makefile to use automake
diff --git a/configure.in b/configure.in
index b6060c7..9d99db2 100644
--- a/configure.in
+++ b/configure.in
@@ -84,6 +84,7 @@
 include/Makefile
 src/Makefile
 src/lib/Makefile
+tests/Makefile
 man/Makefile
 python/Makefile
 python/setup.py