hg: jdk9/dev/jdk: 8166860: Add magic number to jmod file

[mandy.chung at oracle.com]

Changeset: efaf8263c116
Author:    mchung
Date:      2016-10-04 18:56 -0700
URL:       http://hg.openjdk.java.net/jdk9/dev/jdk/rev/efaf8263c116

8166860: Add magic number to jmod file
Reviewed-by: alanb, jjg

! src/java.base/share/classes/java/lang/module/ModulePath.java
+ src/java.base/share/classes/jdk/internal/jmod/JmodFile.java
! src/java.base/share/classes/jdk/internal/module/ModuleInfoExtender.java
! src/java.base/share/classes/module-info.java
! src/jdk.jlink/share/classes/jdk/tools/jlink/internal/Archive.java
! src/jdk.jlink/share/classes/jdk/tools/jlink/internal/DirArchive.java
! src/jdk.jlink/share/classes/jdk/tools/jlink/internal/ImageFileCreator.java
! src/jdk.jlink/share/classes/jdk/tools/jlink/internal/JarArchive.java
! src/jdk.jlink/share/classes/jdk/tools/jlink/internal/JmodArchive.java
! src/jdk.jlink/share/classes/jdk/tools/jlink/internal/ModularJarArchive.java
! src/jdk.jlink/share/classes/jdk/tools/jlink/internal/ResourcePoolManager.java
+ src/jdk.jlink/share/classes/jdk/tools/jmod/JmodOutputStream.java
! src/jdk.jlink/share/classes/jdk/tools/jmod/JmodTask.java
! test/tools/jlink/JLinkNegativeTest.java
! test/tools/jlink/JLinkTest.java