New documents archive and ifdef considered harmful

There is a new doc.cat-v.org site that intends to collect interesting papers and other documents, it is slowly being populated, but please feel free to send in any interesting things that are worth including.

One of the first things I posted there is the excellent, and sadly completely ignored, paper by Henry Spencer and Geoff Collyer: #ifdef Considered Harmful, well worth reading to learn about how to write portable software without abusing the wicked C preprocessor.