[Cooker] Broken source RPMs

[David Aspinall]

I like the idea of spec-helper, but (like a few things in Mandrake),
it's a fancy feature which breaks a lot of things, in this case any
SRPMs which don't use RPM_BUILD_ROOT.  

I think it's because of the "exit 1" in /usr/share/spec-helper which
breaks the build process in these cases.

Could you change that to "exit 0"?

 - David.