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/MemUsage/MemUsage.java.orig b/test/MemUsage/MemUsage.java.orig
new file mode 100644
index 0000000..710031b
--- /dev/null
+++ b/test/MemUsage/MemUsage.java.orig
@@ -0,0 +1,15 @@
+
+public class MemUsage {
+  public static final int ROUNDS = 8;
+  public static final int SIZE = 2000;
+
+  public static void main(String [] args) {
+    String s;
+    for (int j = 0; j < ROUNDS; j++) {
+      s = "";
+      for (int i = 0; i < SIZE; i++) {
+        s += "x";
+      }
+    }
+  }
+}