NUT sudo make install creates paths not chown'ed to run-time user accounts

[jimklimov]

(Related to #1296 and #1297)

Filesystem objects created by plain make install remain owned by the user who made them (unprivileged in test installs to a scratch DESTDIR, root in "custom production" builds). NUT daemons are pre-configured to run as an unprivileged account (nobody:nogroup, nut:nut, etc.) and corresponding paths get that ownership (and chmod access constraints) in package metadata - but not in a plain local installation that bypasses packaging, so e.g. /var/state/ups owned by root:root (and in fact not created by make install) can not house state, pid (#1299) and pipe files for drivers and upsd; the /usr/local/ups/etc is not protected from the world reading it, etc.

Proposed solution: add a recipe like make install-own (depends on install, and separated to avoid conflicts for existing use-cases in dist, packaging, etc.) that would try to apply ownership+permissions according to configure script choices. Or revise if existing install recipe tries to do the right thing but for some reason fails to (without faulting the make call)?..