Function printFile(), request to add Chinese support

[w38351479]

conn = cups.Connection()
job_id = conn.printFile(printer = printer,
filename = filename,
title = '打印的标题',
options = merged_options)

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When I use the printFile function, if the “title”contains Chinese or the “job-name” contains Chinese, the Chinese part of the log record on the printer is garbled. Please help me solve this problem，thanks~