Philippe Waroquiers b466dd954a better handle and better document the case of multi-locks cycles
In case a lock order violation is detected in a multi lock cycle,
then the current code cannot produce the set of locks and the
stack traces involved in the cycle.
However, it is still possible to produce the stack trace of
the new lock and the other lock between which a cycle was discovered.

Also, add a comment in the code clarifying why the set of locks
establishing the required order cannot (currently) be produced.



git-svn-id: svn://svn.valgrind.org/valgrind/trunk@13281
2013-01-30 23:21:34 +00:00
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