hg: jdk10/master: 8189845: Fix for 8157000 causes significant performance regression

[kumar.x.srinivasan at oracle.com]

Changeset: b4beec6a0a25
Author:    ksrini
Date:      2017-10-25 21:19 -0700
URL:       http://hg.openjdk.java.net/jdk10/master/rev/b4beec6a0a25

8189845: Fix for 8157000 causes significant performance regression
Reviewed-by: jjg

! src/jdk.javadoc/share/classes/jdk/javadoc/internal/doclets/toolkit/util/Utils.java
! src/jdk.javadoc/share/classes/jdk/javadoc/internal/doclets/toolkit/util/VisibleMemberMap.java