gnu: python-redis: Remove unused input.

* gnu/packages/python.scm (python-redis, python2-redis) Comment out
  [native-inputs] since these are used only for running tests, which
  is disabled since it requires a Redis server.

gnu: python2-scikit-image: Remove needless native-input and inheritance.

Remove last additional [native-inputs] python-mock, thus there is no
need to inherit python-scikit-image package. Simply use
package-with-python2.

* gnu/packages/python.scm: (python-scikit-image): [properties]: Remove
  python2-variant. (python2-scikit-image) Use simply
  "package-with-python2" after removing last [native-inputs] python-mock.

gnu: python2-scikit-image: Remove needless propagated-input.

* gnu/packages/python.scm: (python2-scikit-image)
  [propagated-inputs]: Remove python-pytz, it does not occur anywhere in
  the source.

gnu: python-scikit-image: Correct inputs.

* gnu/packages/python.scm: (python-scikit-image, python2-scikit-image)
  [propagated-inputs]: Move python-numpy and python-six to [native-inputs].
  Add comment.

gnu: python-blinker: No longer disable tests.

The package does not provide tests, but there is no need to disable them.
Having them enabled allows running them if some newer version may provide
tests.

* gnu/package/python.scm (python-blinker, python2-blinker):
  [arguments]: Remove.

gnu: python-feedgenerator: Remove python byte-code files from source.

* gnu/packages/python.scm (python-feedgenerator, python2-feedgenerator)
  [source]: Add snippet.

gnu: python-joblib: Add comment.

* gnu/packages/python.scm (python-joblib): Add comment.

gnu: python-joblib: Remove python byte-code files from source.

* gnu/packages/python.scm (python-joblib, python2-joblib)[source]:
  Add snippet.

gnu: python-oauthlib, python-oauthlib2: Correct inputs.

* gnu/packages/python.scm (python-oauthlib) [propagated-inputs] Move all to
  [native-inputs]. [native-inputs]: Remove python-mock, python-coverage.
  (python2-oauthlib)[native-inputs]: Add python2-mock.

gnu: python-pyjwt: Add missing inputs and enable test-suite.

* gnu/packages/python.scm (python-pyjwt) [native-inputs]: Add
  python-pytest and python-pytest-cov. [arguments]. Remove.

gnu: python-cov-core: Fix imports.

* gnu/packages/python.scm (python-cov-core) [inputs]: change
  to [propagated-inputs].

gnu: pytest-mock: remove needless propagated input "python-py".

This is not listed as an requirement and is already propagated by
python-pytest.

* gnu/packages/python.scm (python-pytest-mock, python2-pytest-mock):
  [propagated-inputs]: Remove python-py.

gnu: python-testscenarios: remove needless input "mimetools".

This does not occur in the source.

* gnu/packages/python.scm (python-testscenarios, python2-testscenarios)
  [propagated-inputs]: Remove python-mimeparse.

gnu: python-setuptools: remove pre-built binaries from source.

These are used to build self-extracting installers for Windows.

* gnu/packages/python.scm (python-setuptools, python2-setuptools) [source]:
  Add snippet to delete *.exe files.

gnu: python-pytest-xdist: Remove needless input python-apipkg.

* gnu/packages/python.scm (python-pytest-xdist): Remove input
  python-apipkg.

gnu: python-subunit, python-testrepository: Fix inputs

* gnu/packages/python.scm (python-subunit, python2-subunit):
  [propagated-inputs]:: Add python-extras, remove python-testtools, move
  python-testscenarios to [native-inputs].  (python-testrepository,
  python2-testrepository): [native-inputs] move python-fixtures and
  python-subunit to [propagated-inputs]

gnu: python-scripttest: Correct inputs.

python-pytest is only required for testing, not at run-time.

* gnu/packages/python.scm (python-singledispatch, python2-singledispatch):
  [propagated-inputs] Move python-pytest to [native-inputs].

gnu: python-pandas: Fix build.

* gnu/packages/python.scm (python-pandas): Add python-cython to
  native-inputs.

gnu: python-ipython: Fix build.

* gnu/packages/python.scm (python-ipython, python2-ipython) [check,
  install-doc] set PYTHONPATH prior to running tests.

gnu: python-scipy: Fix build.

* gnu/packages/python.scm (python-scipy) Use add-installed-pythonpath.  Add
  dummy newlines character to string to make emacs happy.