Code review comment for lp:~maxb/lpreview-body/fix-package

I know almost nothing about the dirty work involved in packaging, but
a search led me to the following:

  The use of XB-Python-Version in the binary package paragraphs of
  debian/control file has been deprecated and should be removed in the
  normal course of package updates. It never achieved sufficient
  deployment to support it's intended purpose of managing Python
  transitions. This can be adequately accomplished by examining
  package dependencies.

  http://www.debian.org/doc/packaging-manuals/python-policy/ch-module_packages.html

Should you instead be using X-Python-Version?