D7258: makefile: use python3 by default (BC)

[indygreg (Gregory Szorc)]

indygreg added a comment.
indygreg planned changes to this revision.


  I've seen `ifeq($(OS),Windows_NT)` used a lot. Although `OS` may be something else under msys. I'm away from my Windows machine until Sunday. I'll send a revision once I've had time to test on Windows.

REPOSITORY
  rHG Mercurial

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

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

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