[issue12900] Use universal newlines mode for setup.cfg

Changes by Éric Araujo : -- resolution: -> out of date stage: needs patch -> committed/rejected status: open -> closed ___ Python tracker ___ ___

[issue12900] Use universal newlines mode for setup.cfg

New submission from Éric Araujo : We need tests to make sure that setup.cfg files using CRLF or CR as newline character work. We could require that people use LF in the spec, but I don’t think it’s worth it, as it’s simple enough to support all newlines whereas Windows users can’t always use