Add non debug version of libarttest

We now pass the libarttest as an argument to the java program. This
enables using libarttestd by default and libarttest when -O is
specified.

Change-Id: I0de1ae01e2bb5f7b9c7fd7487b6cb55051f60657
diff --git a/test/004-StackWalk/src/Main.java b/test/004-StackWalk/src/Main.java
index 9a1d0ab..883ce2c 100644
--- a/test/004-StackWalk/src/Main.java
+++ b/test/004-StackWalk/src/Main.java
@@ -87,11 +87,8 @@
 
   native int stackmap(int x);
 
-  static {
-    System.loadLibrary("arttest");
-  }
-
   public static void main(String[] args) throws Exception {
+    System.loadLibrary(args[0]);
     Main st = new Main();
     st.$noinline$f();
   }