RFR 8075618: Create tests to check jarsigner work with multi-version jar

[Amanda Jiang]

On 12/18/16 10:23 PM, Wang Weijun wrote:
>> Please see updated webrev : http://cr.openjdk.java.net/~amjiang/8075618/webrev.04/ (also attached)
>>
>> I moved the checkPermission() calls into v9/bersion/Version.java, but I did not check if the output contains "I'm running on version 9", I think it does not make sense to make test fail with later or earlier version of Java (10 or 8).
> This test will run in JDK 10 and your checkPermission(perm,bool) method will not get called. Suppose a regression is introduced one day that breaks the access control checking, this test will not be able to catch it.
>
> If you check for the "version 9" string, the test will fail which reminds you to move the checkPermission call to Version.java of JDK 10 and it will catch that regression.
>
> Thanks
> Max
Version check added to the test 
:http://cr.openjdk.java.net/~amjiang/8075618/webrev.05
Thanks,
Amanda
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