RFR JDK-8185582, Update Zip implementation to use Cleaner, not finalizers

[mandy chung]

Comment on the CSR:

On 9/26/17 11:35 PM, Xueming Shen wrote:
>
> csr:       https://bugs.openjdk.java.net/browse/JDK-8187485
>
I think the @apiNote can be simpler.

Deflater (similar comment for Inflater)

|* @apiNote * In earlier versions, the {@link Object#finalize} method was 
overridden * to call the {@link #end} method when a {@code Deflater} 
object * becomes unreachable. * The {@link #finalize} method is no 
longer defined. If a subclass * overrides ||the {@code end} method, the overridden {@code end} method * is no longer 
invoked.  * <p> * It is strongly recommended to explicitly call {@code 
end} to ||* discard any unprocessed input promptly to free up resources |* when 
|||the compressor |is no longer in use.| |ZipFile

* @apiNote
|* In earlier versions, the {@link Object#finalize} method was overridden 
* to call the {@link #close} method when a {@code ZipFile} object * 
becomes unreachable.|
|* The {@link #finalize} method is no longer defined. If a subclass * 
overrides ||the {@code close} method, the overridden {@code close} method * is no 
longer invoked.|
  * <p>
|* The recommended cleanup for |||{@code ZipFile}| is to explicitly call {@code close} * or use 
try-with-resources.|

657 * <p> 658 * Since the time when the resources held by this object 
will be released 659 * is undetermined, if this method is not invoked 
explicitly, it is strongly 660 * recommended that applications invoke 
this method as soon they have 661 * finished accessing this {@code 
ZipFile}. This will prevent holding up 662 * system resources for an 
undetermined length of time. 663 * <p>

I would suggest to drop this paragraph. @apiNote and @implNote in class 
spec cover that.  

Mandy

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