mount: update internal position on seek - fixes #774
mount: update internal position on seek - fixes #774

arcimboldo/rclone,kynikos/rclone,jackschmidt/rclone,yonjah/rclone,B4dM4n/rclone,B4dM4n/rclone,B4dM4n/rclone,seuffert/rclone,kynikos/rclone,arcimboldo/rclone,kynikos/rclone,ncw/rclone,olihey/rclone,jackschmidt/rclone,jackschmidt/rclone,arcimboldo/rclone,seuffert/rclone,yonjah/rclone,olihey/rclone,kynikos/rclone,seuffert/rclone,ncw/rclone,ncw/rclone,B4dM4n/rclone,jackschmidt/rclone,olihey/rclone,seuffert/rclone,arcimboldo/rclone,olihey/rclone,yonjah/rclone,ncw/rclone,yonjah/rclone