Does not cdnify links in comments

[andrewkdouglas]

I have script tags within IE conditional comments which are not being cdnified thus:

<!--[if lt IE 9]>
<script src="scripts/polyfills-2796740d48.js"></script>
<style>
    .ng-hide {
        display: none !important;
    }
</style>
<![endif]-->

is not converted.

[JPeer264]

Can somebody review this. If the pull request in soup get merged, it would be possible to add this functionality here in gulp-cdnify