So far, the Linux PLIB implementation used to nuke any deadband set at
kernel level with jscal(1) as soon as the joystick was opened. This
broke joystick calibration for FG and unrelated programs, for people who
cared to tune their kernel-level deadband setting.
This fixes PLIB bug #47[1]. Note that the fix has already been in Debian
buster's plib for some time (plib 1.8.5-8 uploaded on 24 Jul 2017[2]).
[1] https://sourceforge.net/p/plib/bugs/47/
[2] https://tracker.debian.org/news/858564/accepted-plib-185-8-source-into-unstable/
