using rpmmacros to automatically update release

[Sebastien BLAISOT <sblaisot pjdirect fr>]

Hi all,

I'm trying to build a bunch of .src.rpm files that are not maintained by 
me and that I don't want to modify.

This can be done without problem.

But I also want to update all package releases to release.repo (say repo 
is MY repository name (like .rf in rpmforge packages), or if it could be 
the distro against which the package has been build (like .EL4 in some 
redhat packages))

is there a way to define a macro saying something like
Release: %{release}.repo

i don't want to edit all spec files by hand and maintain a fork for each 
package.

alternatively, if there is no solution with an rpm macro, I will have to 
script it. is there a way to know the name of the spec file from a 
srp.rpm source package ?

thanks in advance

--
Sebastien BLAISOT