RFR 8231451: ZipFileInputStream::skip handling of negative values with STORED entries

[Lance Andersen]

Hi all,

Please review this fix to ZipFileInputStream::skip when specifying a negative value to the skip method when accessing a STORED entry, https://bugs.openjdk.java.net/browse/JDK-8231451 <https://bugs.openjdk.java.net/browse/JDK-8231451>.  Prior to this fix, you could move past the beginning of the STORED entry.

I also added a release note, https://bugs.openjdk.java.net/browse/JDK-8232384 <https://bugs.openjdk.java.net/browse/JDK-8232384>, to help clarify the behavior of these methods when a negative value is specified.

The webrev can be found at: http://cr.openjdk.java.net/~lancea/8231451/webrev.00/index.html <http://cr.openjdk.java.net/~lancea/8231451/webrev.00/index.html>

Best
Lance
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 <http://oracle.com/us/design/oracle-email-sig-198324.gif>Lance Andersen| Principal Member of Technical Staff | +1.781.442.2037
Oracle Java Engineering 
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