[GRASS-git] [OSGeo/grass] f062bf: GIS_H_VERSION: use git hash (#325)

[Markus Metz]

  Branch: refs/heads/master
  Home:   https://github.com/OSGeo/grass
  Commit: f062bffc82381999600e71345c8683eddab556bf
      https://github.com/OSGeo/grass/commit/f062bffc82381999600e71345c8683eddab556bf
  Author: Markus Metz <33666869+metzm at users.noreply.github.com>
  Date:   2020-03-31 (Tue, 31 Mar 2020)

  Changed paths:
    M configure
    M configure.in
    M general/g.version/main.c
    M include/gis.h
    M include/version.h.in
    M lib/gis/gisinit.c

  Log Message:
  -----------
  GIS_H_VERSION: use git hash (#325)

previously, GIS_H_VERSION was the svn revision number of gis.h and GIS_H_DATE was the svn revision date of gis.h

now they are the git hash and date of the last change to GRASS headers (and anything else in include)
in g.version, these have been and are still referred to as GIS library revision number and date which is wrong, these are
GIS headers revision number and date, which is not the same

Co-authored-by: Huidae Cho <grass4u at gmail.com>
Co-authored-by: Martin Landa <landa.martin at gmail.com>