Adding old unit tests to test suite.

These tests are copied straight over. They'll still run, but they're
using the old system.

Change-Id: If494519e52ddf858a9febfc55bdae830468cb3c8
diff --git a/test/090-loop-formation/expected.txt b/test/090-loop-formation/expected.txt
new file mode 100644
index 0000000..b7e0bb3
--- /dev/null
+++ b/test/090-loop-formation/expected.txt
@@ -0,0 +1,5 @@
+counter1 is 0
+counter2 is 32767
+counter3 is 32767
+counter4 is 0
+counter5 is 65534