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Reported by & fix tested by: Denis A. Doroshenko <d.doroshenko@omnitel.net>

with two swapctl invocations.
Swap on block devices is enabled before fscking filesystems, swap on
files is enabled after all filesystems (including remote) are mounted.

licence in a way that makes ipf not free according to the rules we
established over 5 years ago, at www.openbsd.org/goals.html (and those
same basic rules govern the other *BSD projects too).  Specifically,
Darren says that modified versions are not permitted.  But software
which OpenBSD uses and redistributes must be free to all (be they
people or companies), for any purpose they wish to use it, including
modification, use, peeing on, or even integration into baby mulching
machines or atomic bombs to be dropped on Australia.  Furthermore, we
know of a number of companies using ipf with modification like us, who
are now in the same situation, and we hope that some of them will work
with us to fill this gap that now exists in OpenBSD (temporarily, we
hope).

if we fail" semantics and extends to two varients of data movement: mbuf,
or an iovec style block.

obfuscate, and confuses some software.
derradt + millert concur.

support.
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Ok'd by: deraadt@

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Patch from: wilfried@ via PR#1761
Ok'd by: deraadt@

Treat foo.n as a -man page, not a -me doc

get false positives for YP stuff.  Closes PR 1755

just save the md5 checksums so we can still determine when something
change.  Entries in /etc/changelist that are prefixed with a '+'
will only have their md5 checksums saved, not the actual files.