Create a name reference comment for editing

[cjcodeproj]

If an artist or composer name from id3scan looks like this.

    <artists>
     <artist><unkn>Vandoliers Feat. Joshua Ray Walker &amp; Taylor Hunnicutt</unkn></artist>
    </artists>

It may be easier to edit if there's a comment element that contains a pristine copy of the exact source data.

    <artists>
      <!-- ORIGVAL: Vandoliers Feat. Joshua Ray Walker &amp; Taylor Hunnicutt -->
     <artist><unkn>Vandoliers Feat. Joshua Ray Walker &amp; Taylor Hunnicutt</unkn></artist>
    </artists>