D7258: makefile: use Python 3 by default (BC)

[martinvonz (Martin von Zweigbergk)]

martinvonz added a comment.


  Queuing this now. Thanks!

REPOSITORY
  rHG Mercurial

BRANCH
  default

CHANGES SINCE LAST ACTION
  https://phab.mercurial-scm.org/D7258/new/

REVISION DETAIL
  https://phab.mercurial-scm.org/D7258

To: indygreg, #hg-reviewers, martinvonz, mharbison72, durin42
Cc: mercurial-patches, yuja, mharbison72, durin42, dlax, martinvonz, mercurial-devel