move SystemClassLoader and Runtime.dumpHeap to avian package

classpath/avian/SystemClassLoader.java

@@ -0,0 +1,31 @@
+/* Copyright (c) 2008, Avian Contributors
+
+   Permission to use, copy, modify, and/or distribute this software
+   for any purpose with or without fee is hereby granted, provided
+   that the above copyright notice and this permission notice appear
+   in all copies.
+
+   There is NO WARRANTY for this software.  See license.txt for
+   details. */
+
+package avian;
+
+import java.net.URL;
+import java.net.MalformedURLException;
+
+public class SystemClassLoader extends ClassLoader {
+  protected native Class findClass(String name) throws ClassNotFoundException;
+
+  protected native Class findLoadedClass(String name);
+
+  private native boolean resourceExists(String name);
+
+  protected URL findResource(String name) {
+    if (resourceExists(name)) {
+      try {
+        return new URL("resource:" + name);
+      } catch (MalformedURLException ignored) { }
+    }
+    return null;
+  }
+}