Make Python 2.7.11 the default.
Make Python 2.7.11 the default.

thewtex/python-cmake-buildsystem,jcfr/python-cmake-buildsystem,davidsansome/python-cmake-buildsystem,adrianbroher/python-cmake-buildsystem,python-cmake-buildsystem/python-cmake-buildsystem,thewtex/python-cmake-buildsystem