[trunk] more around memory-leakage (now it's almost nothing left!)... * mapbox should not dispose map, * lockerobject, * protection against multiple disposes
[trunk] more around memory-leakage (now it's almost nothing left!)... * mapbox should not dispose map, * lockerobject, * protection against multiple disposes


git-tfs-id: [https://tfs.codeplex.com/tfs/TFS01]$/SharpMap/Trunk;C97089

nhvu1988/SharpMap,nhvu1988/SharpMap,SharpMap/SharpMap,SharpMap/SharpMap