Apply Chris' patch to allow multiple apps for isapi_wsgi instance.
Apply Chris' patch to allow multiple apps for isapi_wsgi instance.

git-svn-id: 7e822a89a176b6c85b47b7c864bb3d34c9b59148@28 926716e8-761c-0410-85d1-e31c6663a17e

ig0774/isapi_wsgi