hg: jdk10/jdk10/jdk: 8184940: JDK 9 rejects zip files where the modified day or month is 0

[martinrb at google.com]

Changeset: c9fd8c9eab19
Author:    cushon
Date:      2017-08-14 17:19 -0700
URL:       http://hg.openjdk.java.net/jdk10/jdk10/jdk/rev/c9fd8c9eab19

8184940: JDK 9 rejects zip files where the modified day or month is 0
Reviewed-by: martin

! src/java.base/share/classes/java/util/zip/ZipUtils.java
! src/jdk.zipfs/share/classes/jdk/nio/zipfs/ZipUtils.java
+ test/java/util/zip/ZipFile/ZeroDate.java
+ test/jdk/nio/zipfs/ZeroDate.java