RFC 45: GDAL datasets and raster bands as virtual memory mapping

git-svn-id: https://svn.osgeo.org/gdal/trunk@26832 f0d54148-0727-0410-94bb-9a71ac55c965
Regenerated Python bindings

git-svn-id: https://svn.osgeo.org/gdal/trunk@26833 f0d54148-0727-0410-94bb-9a71ac55c965
Merge branch 'trunk' into trunk_with_coverage