Symlink test_env.py instead of test_support in preparation of jinja2.

appengine/components/tool_support/gae_sdk_utils.py

Index: appengine/components/tool_support/gae_sdk_utils.py
diff --git a/appengine/components/tool_support/gae_sdk_utils.py b/appengine/components/tool_support/gae_sdk_utils.py
index 6850cd85e20c7f8dc0d47e99a4c0547637db82e8..43fe762ba0fb21a9b50e6d9ecc50862dc85ed259 100644
--- a/appengine/components/tool_support/gae_sdk_utils.py
+++ b/appengine/components/tool_support/gae_sdk_utils.py
@@ -156,6 +156,9 @@ def setup_gae_sdk(sdk_path):
 
   import dev_appserver
   dev_appserver.fix_sys_path()
+  for i in sys.path[:]:
+    if 'jinja2-2.6' in i:
+      sys.path.remove(i)
 
   # Make 'yaml' variable (defined on top of this module) point to loaded module.
   global yaml