Print failure message if provided#12

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vizio360 wants to merge 3 commits intojcarver989:masterfrom

HuzuTech:print-failure-message

Commits on Nov 13, 2012

Print failure message if provided
Simone Vicentini
committed
removed default value for message
Simone Vicentini
committed
if trace.stack is not defined print the message instead
Simone Vicentini
committed