Renaming only the catalog name for a package

[Rafael Ostertag]

Hi guys

I face the following situation: The package `CSWpango' has `libpango' as
catalog name. Now, I would like to give it only a new catalog name so that I
end up with `CSWpango' and the catalog name `pango'. How do I do that, without
breaking everything?

TIA.

--rafi