hg: jdk9/sandbox/jdk: 8176709: JarFileSystem::isMultiReleaseJar is incorrect

[chris.hegarty at oracle.com]

Changeset: fc81607db2fb
Author:    redestad
Date:      2017-03-15 19:33 +0100
URL:       http://hg.openjdk.java.net/jdk9/sandbox/jdk/rev/fc81607db2fb

8176709: JarFileSystem::isMultiReleaseJar is incorrect
Reviewed-by: mchung, sherman

! src/jdk.zipfs/share/classes/jdk/nio/zipfs/JarFileSystem.java
! test/jdk/nio/zipfs/MultiReleaseJarTest.java
! test/lib/testlibrary/java/util/jar/CreateMultiReleaseTestJars.java