Added test cases for access to elements of multi dimensional arrays.

http://code.google.com/p/aparapi/issues/detail?id=10

We need to test both accesses and assignments.

test/codegen/src/java/com/amd/aparapi/test/Access2DIntArray.java

@@ -4,9 +4,7 @@ public class Access2DIntArray{
    int[][] ints = new int[1024][];
 
    public void run() {
-      for (int i = 0; i < 1024; i++) {
-         ints[i][0] = 1;
-      }
+      int value= ints[0][0];
    }
 }
 /**{Throws{ClassParseException}Throws}**/

test/codegen/src/java/com/amd/aparapi/test/Assign2DIntArray.java

+package com.amd.aparapi.test;
+
+public class Assign2DIntArray{
+   int[][] ints = new int[1024][];
+
+   public void run() {
+      ints[0][0] = 1;
+   }
+}
+/**{Throws{ClassParseException}Throws}**/