g.region: add G_option_required so that g.region without options starts dialog (merge from trunk, https://trac.osgeo.org/grass/changeset/62506)

git-svn-id: https://svn.osgeo.org/grass/grass/branches/releasebranch_7_0@62507 15284696-431f-4ddb-bdfa-cd5b030d7da7

general/g.region/main.c

@@ -346,6 +346,15 @@ int main(int argc, char *argv[])
     parm.save->gisprompt = "new,windows,region";
     parm.save->guisection = _("Effects");
 
+    G_option_required(flag.dflt, flag.savedefault, flag.print, flag.lprint,
+                      flag.eprint, flag.center, flag.gmt_style, flag.wms_style,
+                      flag.dist_res, flag.nangle, flag. z, flag.bbox, flag.gprint,
+                      flag.res_set, flag.update, parm.region, parm.raster,
+                      parm.raster3d, parm.vect, parm.north, parm.south, parm.east,
+                      parm.west, parm.top, parm.bottom, parm.rows, parm.cols,
+                      parm.res, parm.res3, parm.nsres, parm.ewres, parm.tbres,
+                      parm.zoom, parm.align, parm.save, NULL);
+
     if (G_parser(argc, argv))
 	exit(EXIT_FAILURE);