Added SQLite version of hg travel data store. UNTESTED. Hope it works!

OpenSim/Data/SQLite/Resources/HGTravelStore.migrations

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+:VERSION 1         # -------------------------- 
+
+BEGIN;
+
+CREATE TABLE hg_traveling_data (
+    SessionID VARCHAR(36) NOT NULL,
+    UserID VARCHAR(36) NOT NULL,
+	GridExternalName VARCHAR(255) NOT NULL DEFAULT '',
+	ServiceToken VARCHAR(255) NOT NULL DEFAULT '',
+	ClientIPAddress VARCHAR(16) NOT NULL DEFAULT '',
+	MyIPAddress VARCHAR(16) NOT NULL DEFAULT '',
+    TMStamp timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    PRIMARY KEY  (`SessionID`),
+	KEY (`UserID`)
+) ENGINE=InnoDB;
+
+COMMIT;
+

OpenSim/Data/SQLite/SQLiteHGTravelData.cs

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+/*
+ * Copyright (c) Contributors, http://opensimulator.org/
+ * See CONTRIBUTORS.TXT for a full list of copyright holders.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of the OpenSimulator Project nor the
+ *       names of its contributors may be used to endorse or promote products
+ *       derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+using System;
+using System.Collections.Generic;
+using System.Data;
+using System.Reflection;
+using System.Threading;
+using log4net;
+using OpenMetaverse;
+using OpenSim.Framework;
+using Mono.Data.Sqlite;
+
+namespace OpenSim.Data.SQLite
+{
+    /// <summary>
+    /// A SQL Interface for user grid data
+    /// </summary>
+    public class SQLiteHGTravelData : SQLiteGenericTableHandler<HGTravelingData>, IHGTravelingData
+    {
+//        private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
+
+        public SQLiteHGTravelData(string connectionString, string realm) 
+            : base(connectionString, realm, "HGTravelStore") {}
+
+        public HGTravelingData Get(UUID sessionID)
+        {
+            HGTravelingData[] ret = Get("SessionID", sessionID.ToString());
+
+            if (ret.Length == 0)
+                return null;
+
+            return ret[0];
+        }
+
+        public HGTravelingData[] GetSessions(UUID userID)
+        {
+            return base.Get("UserID", userID.ToString());
+        }
+
+        public bool Delete(UUID sessionID)
+        {
+            return Delete("SessionID", sessionID.ToString());
+        }
+
+        public void DeleteOld()
+        {
+            using (SqliteCommand cmd = new SqliteCommand())
+            {
+                cmd.CommandText = String.Format("delete from {0} where TMStamp < datetime('now', '-2 day') ", m_Realm);
+
+                DoQuery(cmd);
+            }
+
+        }
+
+    }
+}