#35 Store session pickle error handling

[Oleg Noga]

if error occurs while pickling session to a file (Session
can't be pickled), SessionFileStore leaves corrupt
session file. For all future attempts ro load this session
into memory we have KeyError, and new session is not
created.

SessionFileStore.diff patch handles exception while
pickling session and does not leave corrupt session
files. So, new session can be created with same key.

DynamicFileStore.diff patch adds a check in MovetoFile,
(was the session stored properly?), so session can be
removed from the memory store only if it was saved to a
file.
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Patches are maked for checkout on 2002-10-29

[Oleg Noga]

SessionFileStore.py patch

[Oleg Noga]

[Stuart Donaldson]

Logged In: YES
user_id=326269

Commited a fix for this bug which was not a direct match to
the patches submitted.

When the pickling exception occurs, now we call
application.handleException() and that takes care of
displaying, as logging, and emailing depending on
configuration. The session file is not saved and gets lost
as a result. The fix involved getting the handleException()
in and running as well.