streamline rebased Gson into source; rebase was done to prevent conflict with other plugins (like upcoming WorldGuard release) which also use Gson; Bukkit doesn't yet handle such conflicts properly

src/com/bukkit/mcteam/gson/CamelCaseSeparatorNamingPolicy.java

@@ -0,0 +1,73 @@
+/*
+ * Copyright (C) 2008 Google Inc.
+ *
+ * Licensed 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.bukkit.mcteam.gson;
+
+import java.lang.annotation.Annotation;
+import java.lang.reflect.Type;
+import java.util.Collection;
+
+/**
+ * Converts the field name that uses camel-case define word separation into separate words that
+ * are separated by the provided {@code separatorString}.
+ *
+ * <p>The following is an example:</p>
+ * <pre>
+ * class IntWrapper {
+ *   public int integerField = 0;
+ * }
+ *
+ * CamelCaseSeparatorNamingPolicy policy = new CamelCaseSeparatorNamingPolicy("_");
+ * String translatedFieldName =
+ *     policy.translateName(IntWrapper.class.getField("integerField"));
+ *
+ * assert("integer_Field".equals(translatedFieldName));
+ * </pre>
+ *
+ * @author Joel Leitch
+ */
+final class CamelCaseSeparatorNamingPolicy extends RecursiveFieldNamingPolicy {
+  private final String separatorString;
+
+  /**
+   * Constructs a new CamelCaseSeparatorNamingPolicy object that will add the
+   * {@code separatorString} between each of the words separated by camel case.
+   *
+   * @param separatorString the string value to place between words
+   * @throws IllegalArgumentException thrown if the {@code separatorString} parameter
+   *         is null or empty.
+   */
+  public CamelCaseSeparatorNamingPolicy(String separatorString) {
+    Preconditions.checkNotNull(separatorString);
+    Preconditions.checkArgument(!"".equals(separatorString));
+    this.separatorString = separatorString;
+  }
+
+  @Override
+  protected String translateName(String target, Type fieldType,
+      Collection<Annotation> annnotations) {
+    StringBuilder translation = new StringBuilder();
+    for (int i = 0; i < target.length(); i++) {
+      char character = target.charAt(i);
+      if (Character.isUpperCase(character) && translation.length() != 0) {
+        translation.append(separatorString);
+      }
+      translation.append(character);
+    }
+
+    return translation.toString();
+  }
+}