Add missing "import re"

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@41652 15284696-431f-4ddb-bdfa-cd5b030d7da7

lib/init/grass.py

@@ -27,6 +27,7 @@ import os
 import atexit
 import string
 import subprocess
+import re
 
 # Variables substituted during build process
 # Set the GISBASE variable