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/GridDataBase.cs

@@ -25,6 +25,7 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
+using System.Collections.Generic;
 using OpenMetaverse;
 
 namespace OpenSim.Data
@@ -35,6 +36,7 @@ namespace OpenSim.Data
         public abstract RegionProfileData GetProfileByUUID(UUID UUID);
         public abstract RegionProfileData GetProfileByString(string regionName);
         public abstract RegionProfileData[] GetProfilesInRange(uint Xmin, uint Ymin, uint Xmax, uint Ymax);
+        public abstract List<RegionProfileData> GetRegionsByName(string namePrefix, uint maxNum);
         public abstract bool AuthenticateSim(UUID UUID, ulong regionHandle, string simrecvkey);
         public abstract DataResponse AddProfile(RegionProfileData profile);
         public abstract ReservationData GetReservationAtPoint(uint x, uint y);
@@ -44,6 +46,7 @@ namespace OpenSim.Data
         public abstract void Initialise();
         public abstract void Initialise(string connect);
         public abstract void Dispose();
+
         public abstract string Name { get; }
         public abstract string Version { get; }
     }