Bug 948171 - ASan: Define LLVM_SYMBOLIZER in js/src/configure.in. r=ted

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extra : rebase_source : 9e178060c58f3810edefe42db48585d750772d34
Bug 948188 - Handle OOM in NewPropertyIteratorObject. r=njn

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extra : rebase_source : e94bc601b37a483904dab9cac5f824920b25abd0