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/012-math/expected.txt b/test/012-math/expected.txt
new file mode 100644
index 0000000..af9708e
--- /dev/null
+++ b/test/012-math/expected.txt
@@ -0,0 +1,32 @@
+res:10
+res:-4
+res:2
+res:-2
+res:21
+res:0
+res:3
+res:4
+res:384
+res:0
+res:0
+a:10
+a:3
+a:2
+a:-3
+a:-21
+a:-3
+a:-3
+a:-6
+a:-768
+a:-6
+a:33554431
+fres:10.0
+fres:-4.0
+fres:21.0
+fres:0.42857142857142855
+fres:3.0
+f:10.0
+f:3.0
+f:21.0
+f:3.0
+f:3.0