They don't work. Even if they were updated, the code will require changes,
as well as the examples. For now, it's better to remove the makefiles than
to pretend we support devkitARM.
- Bring the source and include directories in nflib to the root of the
repository to match the organization of other libraries.
- Expect users to install NFlib in the devkitPro folder.
- Update all Makefiles for modern devkitPro.
- Remove all redundant copies of NFlib in all examples. The only
remaining copy of the library is in the extras/wifi example, but
that one includes more files, so I have left it untouched for now.
