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/MSSQL/MSSQLGridData.cs

@@ -216,6 +216,33 @@ namespace OpenSim.Data.MSSQL
             return null;
         }
 
+        
+        /// <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)
+        {
+            using (AutoClosingSqlCommand command = database.Query("SELECT * FROM regions WHERE regionName LIKE @name"))
+            {
+                command.Parameters.Add(database.CreateParameter("name", namePrefix + "%"));
+
+                List<RegionProfileData> rows = new List<RegionProfileData>();
+
+                using (SqlDataReader reader = command.ExecuteReader())
+                {
+                    while (rows.Count < maxNum && reader.Read())
+                    {
+                        rows.Add(ReadSimRow(reader));
+                    }
+                }
+
+                return rows;
+            }
+        }
+
         /// <summary>
         /// Returns a sim profile from its location
         /// </summary>