Ensure we have the off64_t variant of every function that takes an off_t.

Change-Id: Ib2eee0cf13162be3b62559b84e90c6dcf5aab1c3
diff --git a/tests/Android.mk b/tests/Android.mk
index 39e9409..e60b908 100644
--- a/tests/Android.mk
+++ b/tests/Android.mk
@@ -80,6 +80,7 @@
     string_test.cpp \
     strings_test.cpp \
     stubs_test.cpp \
+    sys_sendfile_test.cpp \
     sys_stat_test.cpp \
     system_properties_test.cpp \
     time_test.cpp \