build: standardize installation modes
build: standardize installation modes

Gentoo was changing some of our installation modes from 0444 to 0644.
There isn't a reason to install things 0444, so we are switching these
to 0644 so the Gentoo ebuild doesn't need this extra step.

dwfreed/openrc,williamh/openrc,williamh/openrc,OpenRC/openrc,williamh/openrc,OpenRC/openrc,dwfreed/openrc,OpenRC/openrc,dwfreed/openrc