traits: Add refresh_cpu_frequency and refresh_cpu_all

[patrickelectric]

No description provided.

[GuillaumeGomez]

I think we should rename the existing refresh_cpu into refresh_cpu_usage and rename this one refresh_cpu. What do you think?

[patrickelectric]

@GuillaumeGomez done

[patrickelectric]

@GuillaumeGomez everything should be fixed now.

[GuillaumeGomez]

I used git grep and found a few occurrences where refresh_cpu should have been refresh_cpu_usage:

c_interface.rs:69:            system.refresh_cpu();
freebsd/system.rs:121:            self.refresh_cpu();
lib.rs:293:            s.refresh_cpu();
lib.rs:447:            s.refresh_cpu();
lib.rs:490:        s.refresh_cpu();
traits.rs:749:        self.refresh_cpu();

[patrickelectric]

ping @GuillaumeGomez

[GuillaumeGomez]

Thanks!