rsync 3.0.x breaks behaviour of --one-file-system --relative --delete

[Simon Matter]

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> https://bugzilla.samba.org/show_bug.cgi?id=6240

Oops, I have checked bugzilla.samba.org but _before_ I realized it has
something to do with --one-file-system.

Sorry for the noise - of course the RedHat BZ still applies to them :)

Thanks,
Simon