[mythtv/f28] (7 commits) ...Update to v29.1.36.20180907.gdde16d475a from branch fixes/29

Summary of changes: 1e3cf3c... Remove f26 target from helper script. (*) ada98b9... Remove mythwikiscripts as it no longer appears to be includ (*) cb7775b... Define python2 path to configure (*) 851cc53... Define python2 path to configure (*) a10b995... Add unpacked file (*) 83f0ae5... require python2 (*) 0d3359f... Update to v29.1.36.20180907.gdde16d475a from branch fixes/2 (*) (*) This commit already existed in another branch; no separate mail sent