use case-insensitivity. seems all the nintendo tools are running on windows and in the system menu html, paths are case-insensitive. it doesnt seem like there is anywhere where they would need to be the other way
* lz77: support for unpacking archives larger than 0xffffff bytes
* nusdownloader: dont try to write files to cache if there is not one set
git-svn-id: http://wiiqt.googlecode.com/svn/trunk@107 389f4c8b-5dfe-645f-db0e-df882bc27289