hg: jdk/jdk10: 8197968: [Backout] JDK-8196883 G1RemSet::refine_card_concurrently doesn't need to check for cards in collection set

[thomas.schatzl at oracle.com]

Changeset: 663f20fc5109
Author:    tschatzl
Date:      2018-02-15 00:20 +0100
URL:       http://hg.openjdk.java.net/jdk/jdk10/rev/663f20fc5109

8197968: [Backout] JDK-8196883 G1RemSet::refine_card_concurrently doesn't need to check for cards in collection set
Reviewed-by: kbarrett

! src/hotspot/share/gc/g1/g1RemSet.cpp