Adjust conditionals to properly respect python 2.7.1+

Change-Id: I32d21a071e054100294e418af5358305eac69944
Reviewed-on: https://gerrit.libreoffice.org/22231Reviewed-by: Michael Stahl <mstahl@redhat.com>
Tested-by: Michael Stahl <mstahl@redhat.com>