Added test for the issue that SEED identifiers are not passed to
evalresp.

Also introduced the mock library.
Added mock library to setup.py.
Passing the SEED identifiers to evalresp.
Added test that evalresp actually uses the SEED identifiers to extract
different responses.
Adjusting some tests to the changes.
Changelog
Merge pull request #686 from krischer/evalresp_fix

Evalresp fix