RFR(S) 8212127: Cleanup TLAB fast refill statistics, perf counters and etc.

[zgu at redhat.com]

After FastTLABRefill was removed, let's cleanup related perf counters.
I removed perf counters for fast refill, and renamed perf counters for
slow refill. 

I am not all clear what implication of renaming/removing exported
symbols, and have no idea what aliasmap is for. So I ran all tests I
think could be affected, showed no problem.


Bug: https://bugs.openjdk.java.net/browse/JDK-8212127
Webrev: http://cr.openjdk.java.net/~zgu/JDK-8212127/webrev.00/

Test:
  hotspot_runtime, hotspot_serviceability, vmTestbase_nsk_monitoring,
  vmTestbase_nsk_jdi, vmTestbase_nsk_jvmti, vmTestbase_vm_jdwp
  on Linux x64

  Eyeball output of jsnap

Thanks,

-Zhengyu