Ticket 48965 - Fix building rpms using rpm.mk
Description: building rpms using rpm.mk was broken due to changes in
spec file.
Fix description: fix rpm.mk by introducing different variables for rpm
and tar files.
https://fedorahosted.org/389/ticket/48965
Reviewed by: mreynolds@redhat.com (Thanks!)
Signed-off-by: Mark Reynolds <mreynolds@redhat.com>