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

[zgu at redhat.com]

Changeset: 29ae530f1c12
Author:    zgu
Date:      2020-01-16 08:40 -0500
URL:       https://hg.openjdk.java.net/jdk/submit/rev/29ae530f1c12

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

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