Fix RNFR exploit
Pull up 1.45-1.50: make build fails!
Pull up 1.5-1.8 (jonathan)
Pull up 1.80 (wrstuden)
Pull up 1.42-1.46 (hubertf)
Pull up 1.8 (hfeyrer)
Pull up 1.32 (hfeyrer)
Pull up 1.5 and 1.6 (hfeyrer)
Pull up 1.35 (scottr)
Pull up 1.24 (ghudson)
Pull up 1.4 (jonathan)
Pull up 1.80 (jonathan)
Pull up 1.21 (jonathan)
Pull up 1.55 (mycroft)
Pull up 1.28 (jonathan)
Pull up 1.26 and 1.27 (phil)
fdisk patch (head revision has diverged, so no corresponding revision number) (phil)
Pull up 1.10-1.14 (lukem)
Pull up 1.12 (jonathan)
Pull up 1.15 (thorpej)