mount: make Get/List/Set/Remove xattr return ENOSYS #2287
mount: make Get/List/Set/Remove xattr return ENOSYS #2287

By default bazil fuse will return ENOTSUPP for these.  However if we
return ENOSYS then OSXFUSE (at least) will never call them again
saving round trips though fuse.

olihey/rclone,yonjah/rclone,seuffert/rclone,yonjah/rclone,ncw/rclone,ncw/rclone,olihey/rclone,olihey/rclone,seuffert/rclone,yonjah/rclone,B4dM4n/rclone,yonjah/rclone,B4dM4n/rclone,B4dM4n/rclone,seuffert/rclone,ncw/rclone,ncw/rclone,seuffert/rclone,B4dM4n/rclone,olihey/rclone