Create a command line option to disable JS: shorten true, false, and undefined to !0, !1 and void 0

[andrewhodel]

shorten true, false, and undefined to !0, !1 and void 0 in JS fails with === comparisons.

[tdewolff]

As was mentioned in #790 I don't think the === operator should fail in those circumstances, do you have an example when this was causing a problem?