Extending CI (system->application->extention)

[eluser]milkboy[/eluser]
I thought it might be a bit clearer if I included some test files. Here is the code again, with a load of test controllers, models, views, libraries, helpers and config files. Any file with test in the file name is there purely for testing.

If you look at the files you will notice that there is a root/extention/ and a root/system/application/ folder.

Again all actual changes to how CI works are marked with:

extention change

Maybe I am approaching this from completely the wrong angle. Comments would be greatly appriciated.