fixes #3933 virtualenv using python 2.6 site
Change: 131069999
diff --git a/util/python/python_config.sh b/util/python/python_config.sh
index 76ad559..00619c6 100755
--- a/util/python/python_config.sh
+++ b/util/python/python_config.sh
@@ -59,8 +59,12 @@
 python_paths = []
 if os.getenv('PYTHONPATH') is not None:
   python_paths = os.getenv('PYTHONPATH').split(':')
-
-all_paths = set(python_paths + site.getsitepackages())
+try:
+  library_paths =  site.getsitepackages()
+except AttributeError:
+ from distutils.sysconfig import get_python_lib
+ library_paths = get_python_lib()
+all_paths = set(python_paths + library_paths)
 
 paths = []
 for path in all_paths: