Logging framework

Well, I've now written the bones of my framework for doing log or console output at various levels of detail. Unfortunately, I now need to go through all the source code and work out what deserves to be output at each different level of verbosity: Error, Warning, Normal, Verbose, Debug. As the approach in the source code at the moment seems to be, 'What I feel like doing in this file,' I've got my work cut out. I've done errors and (I think) most warnings, but... yeah. Lots of printfs.