THIS column doesn't normally entertain requests deemed to be of minority interest. But since Seamus McManus, one of this town's best-known Irishmen, seemed terribly downcast when he made it we felt we had to oblige. McManus would like all Irishmen to know that due to unforeseen circumstances the celebration party is off. He also points out that parachutes have been laid out on the roof of the Mandarin for the convenience of any of his countrymen who feel in need of taking a running jump. While he was at it, he also mentioned something about ''Dutch courage'', which we assume to be some brew that was to have been served at the aborted party. In what to us seemed like a coded message to his countrymen, the Mandarin GM said: ''The Irish goalkeeper will not be shot. His penance will be to be drunk for a fortnight.'' Keeping Posted has to admit that we have no idea about the significance of any of the aforementioned. And not wanting to intrude on personal grief we didn't bother to ask McManus either. But someone who knows about these things tells us that it might have some relevance to a soccer tournament that is currently taking place in some other part of the world. So, if you're Irish . . .