PIP: Support "sanitized" project names

[haikoschol]

The Python Packaging Guide specifies what characters can be used in the name field in setup.py. For some illegal characters (e.g. spaces), setuptools does not throw an error, but replaces them with dashes during installation.

The analyzer uses pydep, which hooks setup() and captures it's keyword arguments verbatim. Therefore it fails when searching for the original name in the output of pipdeptree.

[haikoschol]

Eventually we want to remove pydep (and pipdeptree). One approach would be to run python setup.py egg_info and parse the resulting metadata file.

[sschuberth]

The analyzer uses pydep, which hooks setup() and captures it's keyword arguments verbatim.

pydep is not used anymore as of e235259, so I'm closing this.