[rfpkg/f30] (8 commits) ...minor changes

Summary of changes: e04bd8f... Rebuild for python-3.8 (*) 9ef1bde... Tweak %%if for el8 (*) 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 (*) 9138171... minor changes (*) This commit already existed in another branch; no separate mail sent