Program to convert tar.gz to RPM
 

I remember that at one time there was a program to either convert a tar.gz to RPM or detect system changes, package them up and create an RPM.

Anyone know what this is/was? Is there something newer now?

May be not, what you are looking for : rpmbuild.

I'd guess, you mean a source code package, tar.gz ?
rpmbuild -bb <name>.spec : Will build the rpm package(s)

You have the 12,000 source SRC.RPMS, Fedora 14 here
http://download.fedora.redhat.com/pu.../source/SRPMS/
Package content : A tar.gz or a tar.bz2, a spec file, etc.

And lots of other spec files and / or src.rpms can be found with Google.

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