hg: jdk9/dev/jdk: 8129544: ArrayIndexOutOfBoundsException when decoding corrupt Base64 string

[xueming.shen at oracle.com]

Changeset: d8631718296c
Author:    sherman
Date:      2015-06-24 11:15 -0700
URL:       http://hg.openjdk.java.net/jdk9/dev/jdk/rev/d8631718296c

8129544: ArrayIndexOutOfBoundsException when decoding corrupt Base64 string
Summary: to take input bytes as unsigned before check range
Reviewed-by: alanb

! src/java.base/share/classes/java/util/Base64.java
! test/java/util/Base64/TestBase64.java