Everyone has CLZ.

Even armv5 had CLZ.

Change-Id: I51bc8d1166d09940fd0d3f4c7717edf26977082c
diff --git a/tests/Android.mk b/tests/Android.mk
index eb97e6c..da9d676 100644
--- a/tests/Android.mk
+++ b/tests/Android.mk
@@ -71,6 +71,7 @@
     stdio_test.cpp \
     stdlib_test.cpp \
     string_test.cpp \
+    strings_test.cpp \
     stubs_test.cpp \
     unistd_test.cpp \