Re: [R21.4] document CCL example

Ar an naoiú lá de mí Márta, scríobh Stephen J. Turnbull: Despite how long it’s taken me, I was still aware of it being in my queue--there’s some feedback from you I need to act on, and making url-coding.el available under mule-packages is worth the doing. Still, no harm in committing it in that state. (Just got back from five days catching up with some old friends in London, that turned into six because of crazy London traffic patterns--really, 4.30 on a Thursday being rush hour? I should get to a good few things in my queue over the next three days.) -- “I, for instance, am gung-ho about open source because my family is being held hostage in Rob Malda’s basement. But who fact-checks me, or Enderle, when we say something in public? No-one!” -- Danny O’Brien