hg: jdk8u/jdk8u-dev/jdk: 8155691: Update GIFlib library to the latest up-to-date

[alexander.zvegintsev at oracle.com]

Changeset: 985eed16a784
Author:    azvegint
Date:      2016-08-17 15:19 +0300
URL:       http://hg.openjdk.java.net/jdk8u/jdk8u-dev/jdk/rev/985eed16a784

8155691: Update GIFlib library to the latest up-to-date
Reviewed-by: serb

! src/share/native/sun/awt/giflib/dgif_lib.c
! src/share/native/sun/awt/giflib/gif_lib.h
! src/share/native/sun/awt/giflib/gifalloc.c
+ src/share/native/sun/awt/giflib/openbsd-reallocarray.c