Add tests for all the vendored code

[ehashman]

As is evident in the LICENSE file, this repo consists of a lot of vendored code, particularly including the delocate stuff mentioned in #102. When we vendored the code, we probably should have also vendored the corresponding unit tests to protect us from drift...

It would be nice to go back and do that. Here's all the code we could potentially do this for that I can see. Some of these might be easy to check off if there were no upstream tests.

• delocate
  • auditwheel/tools.py
  • auditwheel/wheeltools.py
• nibabel
  • auditwheel/tmpdirs.py
• pax-utils
  • auditwheel/lddtree.py