I just finished writing a perl script to rewrite all the +REQUIRED_BY
files if anyone's interested.  It's most useful.

I'm about to embark on writing a script to update all occurrences of
one package to another in the +CONTENTS files.  I have yet to determine
if the database needs to be updated after this; I tend to think not.

These are things that could be handled by an upgrade program without too
much hassle.  I just don't feel like poking around the c-code in admin
to make this work at the moment.

Any takers?  It seems to work rather well' useful when trying to delete
packages, unless +REQUIRED_BY has become obsolete, or needs to be
updated in the database instead (in which case I'll look into a
rewrite).