K 10
svn:author
V 3
des
K 8
svn:date
V 27
2018-05-11T00:01:43.082176Z
K 7
svn:log
V 336
Reduce <sys/queue.h> pollution.

While <sys/sysctl.h> includes <sys/queue.h> unconditionally, it is only
actually used in code which is conditional on _KERNEL.  Make the #include
itself conditional as well, and fix userland code that uses <sys/queue.h>
for other purposes but relied on <sys/sysctl.h> to bring it in.

MFC after:	1 week

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