Add the most useful Apache Commons utils

compiler/java/com/google/dart/compiler/util/apache/exception/CloneFailedException.java

Index: compiler/java/com/google/dart/compiler/util/apache/exception/CloneFailedException.java
diff --git a/compiler/java/com/google/dart/compiler/util/apache/exception/CloneFailedException.java b/compiler/java/com/google/dart/compiler/util/apache/exception/CloneFailedException.java
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index 0000000000000000000000000000000000000000..cd93dd9dec7ca6e4c02c630297998717bac4ca23
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+++ b/compiler/java/com/google/dart/compiler/util/apache/exception/CloneFailedException.java
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+// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ * 
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.google.dart.compiler.util.apache.exception;
+
+/**
+ * Exception thrown when a clone cannot be created. In contrast to
+ * {@link CloneNotSupportedException} this is a {@link RuntimeException}.
+ * <p>
+ * NOTICE: This file is modified copy of its original Apache library.
+ * It was moved to the different package, and changed to reduce number of dependencies.
+ * 
+ * @since 3.0
+ */
+public class CloneFailedException extends RuntimeException {
+    // ~ Static fields/initializers ---------------------------------------------
+
+    private static final long serialVersionUID = 20091223L;
+
+    // ~ Constructors -----------------------------------------------------------
+
+    /**
+     * Constructs a CloneFailedException.
+     * 
+     * @param message description of the exception
+     * @since upcoming
+     */
+    public CloneFailedException(final String message) {
+        super(message);
+    }
+
+    /**
+     * Constructs a CloneFailedException.
+     * 
+     * @param cause cause of the exception
+     * @since upcoming
+     */
+    public CloneFailedException(final Throwable cause) {
+        super(cause);
+    }
+
+    /**
+     * Constructs a CloneFailedException.
+     * 
+     * @param message description of the exception
+     * @param cause cause of the exception
+     * @since upcoming
+     */
+    public CloneFailedException(final String message, final Throwable cause) {
+        super(message, cause);
+    }
+}