[dapper] xreflabel considered harmful

[Jordan Mantha]

> To give an example of the changes that need to be made:
>
> <sect1 id="codecs" xreflabel="Multimedia Codecs" status="complete">
>
> Will become:
>
> <sect1 id="codecs" status="complete">
>
> Please could each document maintainer grep through the source and remove
> all of these? I've done it for the Ubuntu Desktop Guide, and I'll do
> About Ubuntu too.
>
> You don't need to generate new pots, as these are not in the pot files
> anyway.

Hmm, so what do we use to replace xreflabel? Is there an alternate way
of specifing the text of the link? If we just take it out completely
I'll need to adjust the packaging guide so that the text makes sense.

-Jordan