3836faf re-enable RCU_FAST_NO_HZ, enable NO_HZ_FULL on x86_64

Authored and Committed by kyle 6 years ago
    re-enable RCU_FAST_NO_HZ, enable NO_HZ_FULL on x86_64
    
    - I also like to live dangerously. (Re-enable RCU_FAST_NO_HZ which has been off
      since April 2012. Also enable NO_HZ_FULL on x86_64.)
    - I added zipped modules ages ago, remove it from TODO.
    
        
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