hg: jdk/jdk: 8236878: Use atomic instruction to update StringDedupTable's entries and entries_removed counters

[zgu at redhat.com]

Changeset: adcb848a9ecc
Author:    zgu
Date:      2020-01-16 18:36 -0500
URL:       https://hg.openjdk.java.net/jdk/jdk/rev/adcb848a9ecc

8236878: Use atomic instruction to update StringDedupTable's entries and entries_removed counters
Reviewed-by: rkennke, shade

! src/hotspot/share/gc/shared/stringdedup/stringDedupTable.cpp
! src/hotspot/share/gc/shared/stringdedup/stringDedupTable.hpp