[GRASS-git] [OSGeo/grass] 494bba: g.extension: change to python3 (#83)

[AnikaBettge]

  Branch: refs/heads/releasebranch_7_8
  Home:   https://github.com/OSGeo/grass
  Commit: 494bbaf8289f1c49e8ed3928cd8b27e16b85ba8a
      https://github.com/OSGeo/grass/commit/494bbaf8289f1c49e8ed3928cd8b27e16b85ba8a
  Author: AnikaBettge <37300249+AnikaBettge at users.noreply.github.com>
  Date:   2019-08-11 (Sun, 11 Aug 2019)

  Changed paths:
    M scripts/g.extension/g.extension.py

  Log Message:
  -----------
  g.extension: change to python3 (#83)

* g.extension: change to python3
* g.extension: update for metamodules
* g.extension: python3 shebangs for windows