Modularizes the Maven project

This commit modularizes the maven project into several modules:
 - l2jserver2-common: common sources for both login and gameserver
 - l2jserver2-gameserver: the game server
 - l2jserver2-loginserver: the login server
 - l2jserver2-tools: refactored src/tools/java soure folder

l2jserver2-gameserver/src/main/java/com/l2jserver/model/dao/CharacterFriendDAO.java

@@ -0,0 +1,64 @@
+/*
+ * This file is part of l2jserver <l2jserver.com>.
+ *
+ * l2jserver is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * l2jserver is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with l2jserver.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package com.l2jserver.model.dao;
+
+import com.l2jserver.model.game.CharacterFriend;
+import com.l2jserver.model.id.FriendID;
+import com.l2jserver.model.world.L2Character;
+import com.l2jserver.model.world.character.CharacterFriendList;
+import com.l2jserver.service.cache.Cacheable;
+import com.l2jserver.service.cache.IgnoreCaching;
+import com.l2jserver.service.database.DataAccessObject;
+
+/**
+ * The {@link CharacterFriendDAO} is can load and save
+ * {@link CharacterFriendList character friend list}.
+ * 
+ * @author <a href="http://www.rogiel.com">Rogiel</a>
+ */
+public interface CharacterFriendDAO extends
+		DataAccessObject<CharacterFriend, FriendID>, Cacheable {
+	/**
+	 * Load the friend list for character represented by <tt>character</tt> from
+	 * the database
+	 * 
+	 * @param character
+	 *            the character
+	 */
+	void load(L2Character character);
+
+	/**
+	 * Save the instance to the database. If a new database entry was created
+	 * returns true.
+	 * 
+	 * @param friends
+	 *            the friend list
+	 * @return true if created a new entry in database (i.e. insert), false if
+	 *         not created (i.e. update)
+	 */
+	@IgnoreCaching
+	boolean save(CharacterFriendList friends);
+
+	/**
+	 * Delete an entire friend list
+	 * 
+	 * @param friends
+	 *            the friend list
+	 * @return true if at least 1 item was removed
+	 */
+	boolean delete(CharacterFriendList friends);
+}