[Bug 85463] Symbolic threaded stack trace

[Apport retracing service]

** Attachment added: "ThreadStacktrace.txt (retraced)"
   http://librarian.launchpad.net/6903373/%3Cfdopen%3E

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[apport] evolution-exchange-storage crashed with SIGSEGV in e2k_restriction_unref()
https://launchpad.net/bugs/85463