Macros expanding to defined() expression is not actually correct ISO C
behavior. Since it is not clear whether someone might decide to define
the macros to random non-1 values, introduce a level of i

Macros expanding to defined() expression is not actually correct ISO C
behavior. Since it is not clear whether someone might decide to define
the macros to random non-1 values, introduce a level of indirection and
count the same of the helper macros.

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merge ktrace-lwp.

implement pmap_wired_count(). use more macros for determining MMU type.

Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22364, verified by myself.

Move CPU configuration predicates to <machine/cpuconf.h>.