issue2550648 - partial fix for problem in this issue. Ezio Melotti reported that the expression editor allowed the user to generate an expression using retired values. To align the expression editor with the simple dropdown search item, retired values are now removed from the expression editor. Do we really want this though? Supposed a keyword is retired and I want to search for an issue with that retired keyword? Do we have a best policy document that says to remove retired keywords from all places it could possibly be used? It could be argued that the simple search dropdown is wrong and should allow selecting retired values.

recursive-include share *
recursive-include roundup *.*
recursive-include frontends *.*
recursive-include scripts *.* *-*
recursive-include tools *.*
recursive-include test *.py *.txt
recursive-include doc *.html *.png *.txt *.css *.example
recursive-include detectors *.py
global-exclude *.pyc *.pyo .DS_Store
include run_tests.py demo.py *.txt
include doc/conf.py
exclude 2to3-done.txt
exclude doc/security.txt
include locale/*.po locale/*.mo locale/roundup.pot