Apple: add host_cpu_load_info

[stepancheg]

Snippet from host_info.h:

struct host_cpu_load_info {             /* number of ticks while running... */
    natural_t       cpu_ticks[CPU_STATE_MAX]; /* ... in the given mode */
};

typedef struct host_cpu_load_info       host_cpu_load_info_data_t;
typedef struct host_cpu_load_info       *host_cpu_load_info_t;

[rustbot]

r? @tgross35

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[tgross35]

Thanks! Are you able to put this in a s! block rather than s_no_extra_traits! so you don't need to manually write the hash/eq/debug implementations?

@rustbot author

(just comment @rustbot review after you do that change or if it doesn't work for some reason)

[stepancheg]

@rustbot review