update LICENSE: include the MIT license text of referenced code.

LICENSE

@@ -222,6 +222,24 @@ This product contains a modified portion of 'Netty', an event-driven asynchronou
 
 For the org.apache.dubbo.common.utils.CIDRUtils :
 
-This product contains a modified portion of 'edazdarevic.commons.net.CIDRUtils',
- under a "MIT License" license, see https://github.com/edazdarevic/CIDRUtils/blob/master/CIDRUtils.java
+This product contains a modified portion of 'edazdarevic.commons.net.CIDRUtils' published at
+https://github.com/edazdarevic/CIDRUtils. The project is licensed under a MIT License:
+    * The MIT License
+    *
+    * Copyright (c) 2013 Edin Dazdarevic (edin.dazdarevic@gmail.com)
+    * Permission is hereby granted, free of charge, to any person obtaining a copy
+    * of this software and associated documentation files (the "Software"), to deal
+    * in the Software without restriction, including without limitation the rights
+    * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+    * copies of the Software, and to permit persons to whom the Software is
+    * furnished to do so, subject to the following conditions:
+    * The above copyright notice and this permission notice shall be included in
+    * all copies or substantial portions of the Software.
+    * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+    * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+    * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+    * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+    * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+    * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+    * THE SOFTWARE.