RFR 8191438: jarsigner should print when a timestamp will expire

[Sean Mullan]

Just a few comments:

- Update copyrights to include 2018
- I think you should also open a jarsigner docs issue to add new 
warnings for expired TSA and expiring signer and TSA certs

* Main.java

l1740, typo: s/singer/signer/

--Sean


On 2/9/18 4:10 AM, Weijun Wang wrote:
> Updated again at http://cr.openjdk.java.net/~weijun/8191438/webrev.05/.
> 
> --Max
> 
>> On Jan 4, 2018, at 8:48 AM, Weijun Wang <weijun.wang at oracle.com> wrote:
>>
>> Please take a review at
>>
>>   http://cr.openjdk.java.net/~weijun/8191438/webrev.04/
>>
>> Major changes:
>>
>> 1. Warnings on TSA cert chain: expired or expiring
>>
>> 2. No more check on trusted certs
>>
>> 3. More output at signing when -verbose is on
>>
>> 4. Fine tune messages when TSA cert expires earlier than signer cert
>>
>> 5. New test cases
>>
>> 6. Existing tests modification so signer is not trusted
>>
>> Thanks
>> Max
>>
>