hg: jdk9/client/jdk: 6488522: PNG writer should permit setting compression level and iDAT chunk maximum size

[philip.race at oracle.com]

Changeset: 6648f64ba30a
Author:    prr
Date:      2015-12-16 14:36 -0800
URL:       http://hg.openjdk.java.net/jdk9/client/jdk/rev/6648f64ba30a

6488522: PNG writer should permit setting compression level and iDAT chunk maximum size
Reviewed-by: serb, prr

! src/java.desktop/share/classes/com/sun/imageio/plugins/png/PNGImageWriter.java
+ test/javax/imageio/plugins/shared/ImageWriterCompressionTest.java