Add setExtendedFieldNames() method and set config

Author: Mr14huashao

src/com/esotericsoftware/kryo/serializers/CompatibleFieldSerializer.java

@@ -63,7 +63,7 @@ public CompatibleFieldSerializer (Kryo kryo, Class type, CompatibleFieldSerializ
 
     @Override
     protected void initializeCachedFields() {
-        if (!super.config.extendedFieldNames) {
+        if (!config.extendedFieldNames) {
             final HashSet hashSet = new HashSet();
             CachedField[] fields = cachedFields.fields;
             for (int i = 0, n = fields.length; i < n; i++) {
@@ -304,6 +304,13 @@ public void setChunkedEncoding (boolean chunked) {
 			if (TRACE) trace("kryo", "CompatibleFieldSerializerConfig setChunked: " + chunked);
 		}
 
+		/** When true, field names are prefixed by their declaring class. This can avoid conflicts when a subclass has a field with
+		 * the same name as a super class. Default is false. */
+		public void setExtendedFieldNames (boolean extendedFieldNames) {
+			this.extendedFieldNames = extendedFieldNames;
+			if (TRACE) trace("kryo", "CompatibleFieldSerializerConfig extendedFieldNames: " + extendedFieldNames);
+		}
+
 		public boolean getChunkedEncoding () {
 			return chunked;
 		}