zathura: 0.2.9 -> 0.3.1; girara: 0.2.2 -> 0.2.3
python: adding test/test_support.py module in all python versions

- test/test_support.py module is used by many libraries which backport python
  3.0 functionality to 2.6/2.7
- enable subprocess32 tests (now passing for python 2.6/2.7)