gnu: python-sphinx-cloud-sptheme: Explicitly disable tests.

* gnu/packages/python.scm (python-sphinx-cloud-sptheme,
python2-sphinx-cloud-sptheme)[arguments]: New field.

gnu: python-sphinx-repoze-autointerface: Disable tests.

* gnu/packages/python.scm (python-sphinx-repoze-autointerface,
python2-sphinx-repoze-autointerface)[arguments]: New field.

gnu: python-sphinx-rtd-theme: Disable tests.

* gnu/packages/python.scm (python-sphinx-rtd-theme,
python2-sphinx-rtd-theme)[arguments]: New field.

gnu: python-sphinxcontrib-newsfeed: Disable tests.

* gnu/packages/python.scm (python-sphinxcontrib-newsfeed
python2-sphinxcontrib-newsfeed)[arguments]: New field.

gnu: python-sphinxcontrib-programoutput: Disable tests.

* gnu/packages/python.scm (python-sphinxcontrib-programoutput,
python2-sphinxcontrib-programoutput)[arguments]: New field.

gnu: python-requests-mock: Update to 1.3.0.

* gnu/packages/openstack.scm (python-requests-mock, python2-requests-mock):
Update to 1.3.0.

gnu: python-tabulate: Disable tests.

* gnu/packages/python.scm (python-tabulate)[arguments]: New field.
[native-inputs]: Remove.
[source]: Remove test substitution snippet.

gnu: awscli: Explicitly disable tests.

* gnu/packages/python.scm (awscli)[arguments]: New field.
[native-inputs]: Remove.

gnu: python-mako: Fix tests.

* gnu/packages/python.scm (python-mako, python2-mako)[native-inputs]: Add
PYTHON-PYTEST.

gnu: python-openid-teams: Disable tests.

* gnu/packages/python.scm (python-openid-teams,
python2-openid-teams)[arguments]: New field.

gnu: python-openid-cla: Disable tests.

* gnu/packages/python.scm (python-openid-cla, python2-openid-cla)[arguments]:
New field.

gnu: python-oslosphinx: Disable tests.

* gnu/packages/openstack.scm (python-oslosphinx,
python2-oslosphinx)[arguments]: New field.

gnu: python-pygit2: Skip tests requiring network access.

* gnu/packages/python.scm (python-pygit2, python2-pygit2)[source](patches):
New field.
* gnu/packages/patches/python-pygit2-disable-network-tests.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add it.

gnu: python-trollius-redis: Disable tests.

* gnu/packages/python.scm (python-trollius-redis,
python2-trollius-redis)[arguments]: New field.

Merge branch 'master' into python-tests

gnu: libwacom: Update to 0.23.

* gnu/packages/xdisorg.scm (libwacom): Update to 0.23.

gnu: Add python-openid.

* gnu/packages/python.scm (python-openid): New variable.

gnu: gajim: Do not propagate Python packages.

* gnu/packages/messaging.scm (gajim)[propagated-inputs]: Move all inputs from
here...
[inputs]: ...to here.

gnu: gajim: Update to 0.16.7.

* gnu/packages/messaging.scm (gajim): Update to 0.16.7.

gnu: ffmpeg: Build with SDL support.

SDL is required for the `ffplay' executable to be built.

* gnu/packages/video.scm (ffmpeg)[inputs]: Add sdl2.

Signed-off-by: Marius Bakke <mbakke@fastmail.com>