* New upstream release, "Sister and friend". * Update to new Python policy. - Bump up debhelper build-dep to >= 5.0.37.2. - Set Python compatibility level to 2. - Add XB-Python-Version to pitivi. - Add a python-central (>= 0.4.17) build-dep. - Build-depend on cdbs (>= 0.4.43). - Add a XS-Python-Version (current). - Call dh_pycentral to fill XB-Python-Version and add a pycentral dep, and swap the executable bit fixup with the dh_py* calls.