fix: mapping for xbmc eject on device mceusb

Follows ksooo #4949 and #4979

Devices like
http://h10025.www1.hp.com/ewfrf/wc/document?cc=uk&lc=en&docname=c00844678
etc benefit form these keys.
[posixdirectory] convert non-utf8 file names to utf-8
Merge pull request #5049 from uNiversaI/remote

fix: mapping for xbmc eject on device mceusb
Merge pull request #5061 from mkortstiege/posixutf8

[posixdirectory] convert non-utf8 file names to utf-8