Make GDALDriver::QuietDelete() more quiet...

git-svn-id: https://svn.osgeo.org/gdal/trunk@28080 f0d54148-0727-0410-94bb-9a71ac55c965
CartoDB: do automatic polygon->multipolygon promotion at creation time

git-svn-id: https://svn.osgeo.org/gdal/trunk@28081 f0d54148-0727-0410-94bb-9a71ac55c965
Merge branch 'trunk' into trunk_travis_macosx