util: escaping object keys in util.inspect()#16986

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ah-yu wants to merge 2 commits intonodejs:masterfrom

ah-yu:util-inspect

Commits on Nov 13, 2017

util: escaping object keys in util.inspect()
ah-yu
committed

Commits on Nov 14, 2017

test：add new test cases in test-util-inspect.js
ah-yu
committed