Improve Azul Zing support, OpenHFT/OpenHFT#47

Author: peter-lawrey

src/main/java/net/openhft/compiler/CompilerUtils.java

@@ -57,9 +57,13 @@ public enum CompilerUtils {
             theUnsafe.setAccessible(true);
             Unsafe u = (Unsafe) theUnsafe.get(null);
             DEFINE_CLASS_METHOD = ClassLoader.class.getDeclaredMethod("defineClass", String.class, byte[].class, int.class, int.class);
-            Field f = AccessibleObject.class.getDeclaredField("override");
-            long offset = u.objectFieldOffset(f);
-            u.putBoolean(DEFINE_CLASS_METHOD, offset, true);
+            try {
+                Field f = AccessibleObject.class.getDeclaredField("override");
+                long offset = u.objectFieldOffset(f);
+                u.putBoolean(DEFINE_CLASS_METHOD, offset, true);
+            } catch (NoSuchFieldException e) {
+                DEFINE_CLASS_METHOD.setAccessible(true);
+            }
         } catch (NoSuchMethodException | IllegalAccessException | NoSuchFieldException e) {
             throw new AssertionError(e);
         }