[racket] raco command extension changed in 6.1?

It wasn't supposed to change, but apparently something has broken
between 6.0.1 and 6.1.

Running `raco setup` afterward adds `raco mcfly`, but the `require`
should have been enough, and I'll investigate further.

At Wed, 17 Dec 2014 21:52:41 -0500, Neil Van Dyke wrote:
> Did how `raco` commands are added change in Racket 6.1?
> 
> When the following two commands are run under Racket 6.0 or 6.0.1, they 
> show a `raco mcfly` command has been added.  But when run under 6.1 or 
> 6.1.1, the `raco mcfly` command has not been added.
> 
> racket -e '(require (planet neil/mcfly-tools))'
> raco help
> 
> I just removed `~/.racket/` and tested this under the four Racket versions.
> 
> I'm not looking for someone to debug this; I'm just wondering if anyone 
> knows offhand whether anything changed.
> 
> Neil V.
> 
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