[ZODB-Dev] Heads up: changing the way the ZODB.lock_file module works

[Jim Fulton]

In particular, lock files will no-longer be removed when a lock is  
closed (released).  This is to avoid a race condition in the current  
implementation.

AFAIK, the ZODB lock_file module is only used to protect file  
storages.  The probability that the race condition in the current  
locking implementation would lead to problems with file storages is  
very low, but non-zero.  As a result of this change, file-storage  
lock files (e.g. Data.fs.lock) will be left around.

Jim

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