A couple of days ago, the following question was put on hold as off-topic:
I asked this question over a year ago to solve a real problem I faced at the time. It is no longer strictly relevant to me, but I do not see why it should be closed. It may become useful to others.
I have a feeling the voters were a bit overzealous. I had a short discussion about this in the comments with tohecz. In the end he wasn't sure either. To summarize: it seems to me the question is on-topic, not subjective, and follows all the rules. The most that can be said is that it does not have an answer yet, or that the proper answer might be "There is no way to do this."
But I'd be happy to be educated.