Use the same format as is used by MSVS itself to avoid spurious changes when modifying the files. Notably: - Use DOS end of line format (0D 0A). - Add UTF-8 BOM (EF BB BF) to the beginning of the files. - Do not put CR LF at the end of the last line in the file. Closes https://github.com/wxWidgets/wxWidgets/pull/440