Try to select the best backend for the current platform if none has been set
Try to select the best backend for the current platform if none has been set


git-svn-id: b6fd099cd3d97ba56ca68c4d1ea7aaa6a131ba03@9 8b7adc99-b347-0410-ae0a-d9e86c8d69b5

roderyc/enso,roderyc/enso,roderyc/enso