Added comment about 'copy_while' changes

svn path=/website/public_html/live/; revision=83163
Website: Merge initial part of rss change.

I have to do this in two parts, because the second part breaks the update code
by removing the old rss handling implementation.

svn path=/website/public_html/live/; revision=83181
Website: Rebuild to update state data.

svn path=/website/public_html/live/; revision=83182
Website: Merge second part of rss change.

svn path=/website/public_html/live/; revision=83183
Website: Rebuild to remove final traces of old rss system.

svn path=/website/public_html/live/; revision=83184