RFR: 8165944 jar utility doesn't process more than one -C argument

[Steve Drach]

After a discussion with Paul Sandoz, I’ve simplified and, hopefully, thus clarified the changeset.  The new webrev is

http://cr.openjdk.java.net/~sdrach/8165944/webrev.01/ <http://cr.openjdk.java.net/~sdrach/8165944/webrev.01/>

> On Sep 26, 2016, at 12:31 PM, Steve Drach <steve.drach at oracle.com> wrote:
> 
> Hi,
> 
> Please review these changes to the jar tool to fix a capability regression I introduced in an earlier revision.  The issue is that this
> 
> $ jar -cf test.jar -C test1 . -C test2 .
> 
> only puts the files under test1 in the jar and ignores the files under test2.  The DoubleCs test verified the problem and the solution.
> 
> issue: https://bugs.openjdk.java.net/browse/JDK-8165944 <https://bugs.openjdk.java.net/browse/JDK-8165944>
> webrev: http://cr.openjdk.java.net/~sdrach/8165944/webrev.00/ <http://cr.openjdk.java.net/~sdrach/8165944/webrev.00/>
> 
> Thanks,
> Steve
>