Patch Array.prototype.map polyfil for JScript

used into [cli/common.js:93](https://github.com/dmi3y/csslint/blob/wsharraymap/src/cli/common.js#L93)

Note: seems like [csslint-wsh.js](https://github.com/CSSLint/csslint/blob/f1ef64d7cee8f174151db42447dedd3c4ece91c2/release/csslint-wsh.js) was broken for a while, and no complaints since that time. Any good reason why don't freeze development for wsh?