hg: jdk9/dev/jdk: 8166365: Small immutable collections should provide optimized implementations when possible

[claes.redestad at oracle.com]

Changeset: 59e5101730c8
Author:    redestad
Date:      2017-01-12 13:38 +0100
URL:       http://hg.openjdk.java.net/jdk9/dev/jdk/rev/59e5101730c8

8166365: Small immutable collections should provide optimized implementations when possible
Reviewed-by: smarks, psandoz, attila

! src/java.base/share/classes/java/util/Collections.java
! src/java.base/share/classes/java/util/ImmutableCollections.java
! src/java.base/share/classes/java/util/KeyValueHolder.java
! src/java.base/share/classes/java/util/List.java
! src/java.base/share/classes/java/util/Map.java
! src/java.base/share/classes/java/util/Set.java
! test/java/util/Collection/SetFactories.java
! test/java/util/Map/MapFactories.java