If the final key in any sysctl.d file is a duplicate, systemd-sysctl
will exit with an error (and no explaination why). Ignore this, as
duplicate keys are to be expected when overriding settings in the
directory hierarchy.
also a number of minor fixups and bug fixes: spelling, oom errors
that didn't print errors, not properly forwarding error codes,
few more consistency issues, et cetera
glibc/glib both use "out of memory" consistantly so maybe we should
consider that instead of this.
Eliminates one string out of a number of binaries. Also fixes extra newline
in udev/scsi_id