[rfpkg/el8] (5 commits) ...New version with more fixes on multilib builds and python2

Summary of changes: 9b55968... minor improvements (*) 13765a7... Update to 1.26.0 Sync with fedpkg 1.37 (*) d49e225... Fix sources (*) 773012e... Bug fix (rfpkg new-sources) (*) 1a39ceb... New version with more fixes on multilib builds and python2 (*) (*) This commit already existed in another branch; no separate mail sent