tests: add strace-tt.test

* tests/strace-tt.test: New test.
* tests/Makefile.am (MISC_TESTS): Add it.
diff --git a/tests/Makefile.am b/tests/Makefile.am
index ad8bc80..c6c64bd 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -383,6 +383,7 @@
 	strace-T.test \
 	strace-f.test \
 	strace-t.test \
+	strace-tt.test \
 	vfork-f.test \
 	# end of MISC_TESTS