hg: jdk10/client/jdk: 8164971: PNG metadata does not handle ImageCreationTime

[prasanta.sadhukhan at oracle.com]

Changeset: 6581f08c67b6
Author:    pnarayanan
Date:      2017-09-01 12:32 +0530
URL:       http://hg.openjdk.java.net/jdk10/client/jdk/rev/6581f08c67b6

8164971: PNG metadata does not handle ImageCreationTime
Reviewed-by: prr, bpb, jdv
Contributed-by: prahalad.kumar.narayanan at oracle.com

! src/java.desktop/share/classes/com/sun/imageio/plugins/png/PNGImageReader.java
! src/java.desktop/share/classes/com/sun/imageio/plugins/png/PNGMetadata.java
+ test/javax/imageio/plugins/png/PngCreationTimeTest.java