RFR (S) 8243464: Shenandoah: print statistic counters in time order

[Aleksey Shipilev]

RFE:
  https://bugs.openjdk.java.net/browse/JDK-8243464

Currently, the gc+stats counters table is printed pauses-first, then all concurrent phases. It is
inconvenient to track the entire cycle, and should probably be reshuffled to match the time ordering
of phases. This would become handy for per-cycle statistics printouts.

Fix:
  https://cr.openjdk.java.net/~shade/8243464/wevrev.01/

Testing: hotspot_gc_shenandoah, eyeballing logs

-- 
Thanks,
-Aleksey