lib: fix issue `throw null` and `throw undefined` and also `throw false` crash in repl#16574

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priyank-p wants to merge 3 commits intonodejs:masterfrom priyank-p:repl-issue

+21-2

Commits on Oct 28, 2017

repl: fix issue throw null and throw undefined crash in repl
priyank-p
committed

Commits on Oct 29, 2017

test: add a regression test for testing throw null or throw undefined
priyank-p
committed

Commits on Oct 30, 2017

nit: fixed code as requested, fixed tests
priyank-p
committed