Prevent attempts to initialize the helper code multiple times within a process which can trigger a variety of failures.
Prevent attempts to initialize the helper code multiple times within a process
which can trigger a variety of failures.

Fixes Issue #169.

Thanks to Kumar McMillan for the patch.


git-svn-id: 7c59d995a3d63779dc3f8cdf6830411bfeeaa67b@107 d4307497-c249-0410-99bd-594fbd7e173e

wtanaka/google-app-engine-helper-for-django,clones/google-app-engine-django