NetBSD/src qCqrcRv — external/cddl/osnet/dist/uts/common/fs/zfs arc.c dbuf.c, external/cddl/osnet/lib/libumem umem.c
Add missing part of kmem_cache cleanup. Use Solaris argument order for kmem_cache destructors, umem_cache_alloc() and umem_cache_free() too.
