[GRASS-git] [OSGeo/grass] 43fae7: proj 6+ support (#183)

[Markus Metz]

  Branch: refs/heads/master
  Home:   https://github.com/OSGeo/grass
  Commit: 43fae793df4f4e67c5fd1e865a82a1a4a13e227a
      https://github.com/OSGeo/grass/commit/43fae793df4f4e67c5fd1e865a82a1a4a13e227a
  Author: Markus Metz <33666869+metzm at users.noreply.github.com>
  Date:   2019-11-06 (Wed, 06 Nov 2019)

  Changed paths:
    M configure
    M configure.in

  Log Message:
  -----------
  proj 6+ support (#183)

check if share/proj/epsg exists only for PROJ < 6
cosmetic change, no need to backport