(cherry picked from commit e8c99e12ef55bbc4d5a3bbb1d4075fb9d8bb8cae)

ref #1624

ref #1404

ref #1399
(cherry picked from commit d1de3c5a190f8ffb2ed8e768dcbfb968a88f5384)

In some situations it might not be updated automatically due to
timestamp resolution on filesystem is 1 sec.
(cherry picked from commit b0933e81cd81f331c4e9ab03fda87e829ca2ee04)

We want include files and dirs that have changed permissions.

ref #1241

xargs will execute the command twice if the buffer becomes long enough.
This will break tar.

We also use -z instead of piping via gzip while here.

ref #1240

ref #1213