hg: jdk9/dev/jdk: 8165723: JarFile::isMultiRelease() method returns false when it should return true

[claes.redestad at oracle.com]

Changeset: ed1e774e93cf
Author:    redestad
Date:      2016-09-12 17:45 +0200
URL:       http://hg.openjdk.java.net/jdk9/dev/jdk/rev/ed1e774e93cf

8165723: JarFile::isMultiRelease() method returns false when it should return true
Reviewed-by: alanb

! src/java.base/share/classes/java/util/jar/JarFile.java
! test/java/util/jar/JarFile/mrjar/MultiReleaseJarAPI.java
! test/lib/testlibrary/java/util/jar/CreateMultiReleaseTestJars.java