hg: jdk/client: 6686236: GIF native IIOMetadata assumes characterCellWidth/Height as 2bytes

[prahalad.kumar.narayanan at oracle.com]

Changeset: fe898e8bd271
Author:    pnarayanan
Date:      2018-03-22 11:41 +0530
URL:       http://hg.openjdk.java.net/jdk/client/rev/fe898e8bd271

6686236: GIF native IIOMetadata assumes characterCellWidth/Height as 2bytes
Reviewed-by: prr, jdv

! src/java.desktop/share/classes/com/sun/imageio/plugins/gif/GIFImageMetadataFormat.java
! src/java.desktop/share/classes/com/sun/imageio/plugins/gif/GIFWritableImageMetadata.java
! src/java.desktop/share/classes/javax/imageio/metadata/doc-files/gif_metadata.html
+ test/jdk/javax/imageio/plugins/gif/GIFCharCellDimensionTest.java