jrt file system's DirectoryStream reports child paths with wrong paths for directories under /packages

http://mail.openjdk.java.net/pipermail/jigsaw-dev/2015-November/005102.html

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Hi

I have encountered something with I believe may be a bug in the jrt
filesystem.

The children/directory entries of
/packages/com.oracle/java.xml.ws/com are
/modules/java.xml.ws/com/sun
/modules/java.xml.ws/com/oracle
when I believe they should be:
/packages/com.oracle/java.xml.ws/com/sun
/packages/com.oracle/java.xml.ws/com/oracle

You can use the following code to reproduce the issue:

FileSystem fileSystem = FileSystems.getFileSystem(URI.create("jrt:/"));
Path parent = fileSystem.getPath("/packages/com.oracle/java.xml.ws/com");
try (DirectoryStream<Path> directoryStream =
Files.newDirectoryStream(parent)) {
   for (Path each : directoryStream) {
     System.out.println(" parent: " + parent + " child: " + each + "
startsWith: " + each.startsWith(parent));
   }
}

The output I get is:

  parent: /packages/com.oracle/java.xml.ws/com child:
/modules/java.xml.ws/com/oracle startsWith: false

  parent: /packages/com.oracle/java.xml.ws/com child:
/modules/java.xml.ws/com/sun startsWith: false

This is based on b86 with Jigsaw on Mac OS.

Cheers
Philippe

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