pkg/system: synchronize mkdirall() with latest os.MkDirAll()
pkg/system: synchronize mkdirall() with latest os.MkDirAll()

Signed-off-by: Sebastiaan van Stijn <64b2b6d12bfe4baae7dad3d018f8cbf6b0e7a044@gone.nl>

mahak/docker,konstruktoid/docker-upstream,thaJeztah/docker,jimjag/docker,mahak/docker,Mokolea/docker,trebonian/docker,konstruktoid/docker-upstream,thaJeztah/docker,moby/moby,trebonian/docker,jimjag/docker,Mokolea/docker,mahak/docker,jimjag/docker,moby/moby,Ramzec/docker,Ramzec/docker,trebonian/docker,Ramzec/docker,Mokolea/docker,moby/moby,thaJeztah/docker,Mokolea/docker,mahak/docker,trebonian/docker,konstruktoid/docker-upstream,Ramzec/docker,moby/moby,konstruktoid/docker-upstream,jimjag/docker,thaJeztah/docker