WINDUP-331: Fail gracefully on unreadable archive
Merge pull request #351 from mbriskar/WINDUP-331

WINDUP-331: Fail gracefully on unreadable archive
WINDUP-389: Variables is searching the stack in the wrong order (returning the bottom stack frame instead of the top one)
--output directory should default to --input value(.report)
WINDUP-391: Add Iteration Support to the XML format
XML Handlers do not support fully the conditions/operations