UsrMove feature breaking "yum upgrade" upgrades from older releases to F17?

[Bill Nottingham]

Toshio Kuratomi (a.badger at gmail.com) said: 
> Actually... we will "always" need the compat symlinks (for a finite but
> definitely long value of "always").  Third party scripts, scripts that have
> been in use on local systems, written by people who have long since passed
> on (to new jobs), people targetting FHS compliant systems (unless the FHS
> changes), etc will all depend on those symlinks being present.  Even third
> party software that users want to compile and run may try to install into
> /bin, /sbin, and /lib so we may have that problem even there.

And things like /bin/sh are compiled into glibc...

Bill