- Don't complain about deadlocks when reentrant (they cannot happen on a single lock, and more complex deadlocks are just not reported here)
- Display a complete traceback when a deadlock is detected (just displaying the line acquiring the lock is sometimes not enough).


git-svn-id: https://svn.erp5.org/repos/neo/branches/prototype3@1110 71dcc9de-d417-0410-9af5-da40c76e7ee4