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and update calling tool to not show anything for some values where it is None (i.e. where they have no relevance on the system)

But fake every platform always; all platform-dependent calls should be prepared by the test setup anyway

Conflicts:
	tests/tools/perfdhcp/Makefile.am

Mostly the same as FreeBSD, except for swap usage

The previous version was slightly misleading, the reader could
understand it the queries would be just slow as answered from the DB,
instead of not answered at all.

since the b10-showtech had not been released yet, I just replaced its name in the existing changelog entry

This is usually $prefix/var/bind10-devel/. We set mode to 2770 oct.

Besides, loadzone doesn't do anything with this directory.