As far as I can tell, the steps you are recommending take place in an
earlier build step. This would require the user who wants to do this to
rebuild Rtools in its entirety, which is more trouble than it is likely to
be worth. Especially when you can avoid the problem by using your own batch
script or perl script to reset the path on those relatively rare occasions
when you need to use Rtools. Since buiilding Rtools for a Windows machine
is something than CRAN does on a regular basis, why can't they just change
the names there (and not bother the UNIX users, and probably not even bother
the UNIX users who find themselves banished to the Windows wilderness).
Just call them "unixfind" and "unixsort" and everyone will be able to figure
it out....