convert INITools tests to use local packages

[qwcode]

as part of the effort in #259 to have repeatable/reliable tests, this issue would convert all the tests that install INITools from pypi to use fake local packages. We'll need to replicate the 3 different versions that are commonly used in the tests.

[qwcode]

INITools also has syntax errors in py3, which makes us vulnerable to false judgements about test results.

[qwcode]

INITools is used in many cases, because there are 3 clear versions to distinguish in testing.
that's simulated now in the tests/packages/simple-X.0.tar.gz packages, so converting the tests can begin.

[dstufft]

I'm going to close this as a duplicate of #259.