refactor: parameterize the root prefix number of characters To make i18n work on windows, we need to clean the three character root elements(drive letter, colon, backslash) from the front of the various paths. Parameterize the number of chars. Old way hard coded to 1, which leaves :/ in the path and generates bad LOCALE_DIRS. From issues getting Roundup running on windows discussed on mailing list by Simon Eigeldinger. Thread starts with: https://sourceforge.net/p/roundup/mailman/message/41557096/ subject: Installing Roundup on Windows 2023-10-05.

recursive-include share *
recursive-include roundup *.py *.txt
recursive-include frontends *.*
recursive-include scripts *.* *-*
recursive-include scripts/Docker Dockerfile *.* *_*
recursive-include tools *.* base64
recursive-include test *.py *.txt
recursive-include doc *.html *.png *.txt *.css *.example
recursive-include detectors *.py README.txt
include demo.py *.txt
global-exclude *.pyc *.pyo .DS_Store *.orig *.rej *~ \#* .flake8
include doc/conf.py doc/roundup-favicon.ico
include locale/*.po locale/*.mo locale/roundup.pot locale/Makefile