g.extension: add messages for -d flag

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@47322 15284696-431f-4ddb-bdfa-cd5b030d7da7

scripts/g.extension/g.extension.py

@@ -347,7 +347,9 @@ def install_extension():
                   ]
     
     if flags['d']:
+        grass.message(_("To compile run:"))
         sys.stderr.write(' '.join(makeCmd) + '\n')
+        grass.message(_("To install run:\n\n"))
         sys.stderr.write(' '.join(installCmd) + '\n')
         return