Need grub interface

[Neal D. Becker]

anaconda does a great job setting up grub.  Just one problem.  AFAICT, there
is no convenient way to redo this process.

I just added a drive to my machine, and I needed to redo grub.  All drive
numbers changed.

I found it was very difficult to find information on how to repair this. 
The grub info itself has lots of detail, but is remarkably short on basic
howto.

Anyway, what Fedora can really use is a way to rerun grub-install, possibly
with changed parameters.

I am a highly experienced user, but I have to do grub-install just
infrequently enough that it's always a major PIA to dig up the info on how
to do it.