WIP: Make ntpleapfetch pass shellcheck
This remains:
In ./ntpclients/ntpleapfetch line 315:
FSHA1=$(printf '%08x%08x%08x%08x%08x' $FSHA1)
^-- SC2183: This format string has 5 variables, but is passed 1 arguments.
^-- SC2086: Double quote to prevent globbing and word splitting.
WIP: This is untested. Someone who actually uses this script should test it. I started on this, but it ended up being a lot of changes and I'm not sure if I'm going to put in the time to finish this.