Updating mogtool

[dormando]

Opinions!

I have some direct users of the 'mogtool' util now, and it needs 
updating. I want to use the same help system as mogadm but it's pretty 
involved.

What would be better?

1) Merge mogtool's functionality into mogadm
or
2) Pull the common code out into a library

Either one's not too bad. Library might be cleaner, but it's also nice 
to have one comprehensive tool to use.

-DOrmando