i.landsat.acca: use standardized options (https://trac.osgeo.org/grass/ticket/2409)

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@62968 15284696-431f-4ddb-bdfa-cd5b030d7da7

imagery/i.landsat.acca/main.c

@@ -106,12 +106,9 @@ int main(int argc, char *argv[])
     G_add_keyword(_("Landsat"));
     G_add_keyword("ACCA");
     
-    band_prefix = G_define_option();
-    band_prefix->key = "input_prefix";
+    band_prefix = G_define_standard_option(G_OPT_R_BASENAME_INPUT);
     band_prefix->label = _("Base name of input raster bands");
     band_prefix->description = _("Example: 'B.' for B.1, B.2, ...");
-    band_prefix->type = TYPE_STRING;
-    band_prefix->required = YES;
     
     output = G_define_standard_option(G_OPT_R_OUTPUT);