think through C and fortran library testing

[cekees]

@mfarthin and @ahmadia what this issue is getting at is the significant amount of C and C++ code we're using. I'm guessing for now we should just focus on getting the test coverage at the level of the python interface to the functionality to keep it simple, but there is some functionality that we don't expose to python so to truly get coverage we'd have to write lower level tests or commit to exposing everything, which is a lot easier now with Cython then when we first wrote a lot of this code.

[adimako]

@cekees does the recent project we have had close this issue?