Add the missing bits for the new region-search:

- Added lookup in the data-layer
  - MySQL works
  - SQLite doesn't have a grid-db, so it won't work there
  - I added MSSQL-code to the best of my knowledge; but I don't know MSSQL :-)
- Added the plumbing up to OGS1GridServices. This speaks with the grid-server
  via XMLRPC.
- Modified MapSearchModule to use the new data. It's backward compatible; if
  used with an old grid-server, it just returns one found region instead of a
  list.
- Refactored a bit.
Note: This updates data, grid-server and region code. No new files.

OpenSim/Data/MySQL/MySQLGridData.cs

@@ -282,6 +282,52 @@ namespace OpenSim.Data.MySQL
             }
         }
 
+        /// <summary>
+        /// Returns up to maxNum profiles of regions that have a name starting with namePrefix
+        /// </summary>
+        /// <param name="name">The name to match against</param>
+        /// <param name="maxNum">Maximum number of profiles to return</param>
+        /// <returns>A list of sim profiles</returns>
+        override public List<RegionProfileData> GetRegionsByName(string namePrefix, uint maxNum)
+        {
+            MySQLSuperManager dbm = GetLockedConnection();
+
+            try
+            {
+                Dictionary<string, string> param = new Dictionary<string, string>();
+                param["?name"] = namePrefix + "%";
+
+                IDbCommand result =
+                    dbm.Manager.Query(
+                        "SELECT * FROM regions WHERE regionName LIKE ?name",
+                        param);
+                IDataReader reader = result.ExecuteReader();
+
+                RegionProfileData row;
+
+                List<RegionProfileData> rows = new List<RegionProfileData>();
+
+                while (rows.Count < maxNum && (row = dbm.Manager.readSimRow(reader)) != null)
+                {
+                    rows.Add(row);
+                }
+                reader.Close();
+                result.Dispose();
+
+                return rows;
+            }
+            catch (Exception e)
+            {
+                dbm.Manager.Reconnect();
+                m_log.Error(e.ToString());
+                return null;
+            }
+            finally
+            {
+                dbm.Release();
+            }
+        }
+
         /// <summary>
         /// Returns a sim profile from it's location
         /// </summary>