hg: nio/nio/jdk: Fixes to zip provider demo:

[alan.bateman at sun.com]

Changeset: ae67e52ef32f
Author:    alanb
Date:      2009-11-10 11:39 +0000
URL:       http://hg.openjdk.java.net/nio/nio/jdk/rev/ae67e52ef32f

Fixes to zip provider demo:
1. ZipFileSystem.{closeableObjects,fileSystems} not thread safe
2. Close does not remove object from closeableObjects (now closeables)
3. ZipFileSystem uses raw type
4. ZipFilePath.resolve(null) throws NPE
Contributed-by: uckelman at nomic.net

! src/share/demo/nio/ZipFileSystem/com/sun/nio/zipfs/ZipFilePath.java
! src/share/demo/nio/ZipFileSystem/com/sun/nio/zipfs/ZipFileSystem.java
! src/share/demo/nio/ZipFileSystem/com/sun/nio/zipfs/ZipFileSystemProvider.java