git-buildpackage: add missing import

so move_old_export works again

diff --git a/gbp/scripts/buildpackage.py b/gbp/scripts/buildpackage.py
index bef2121..09d51e3 100755 (executable)
--- a/gbp/scripts/buildpackage.py
+++ b/gbp/scripts/buildpackage.py
@@ -22,6 +22,7 @@ import errno
 import os, os.path
 import sys
 import tempfile
+import time
 import shutil
 import gbp.deb as du
 from gbp.command_wrappers import (Command,