RFR(S): 8237589: Fix copyright header formatting

[Jonathan Gibbons]

I checked the langtools files.  OK.

-- Jon


On 01/21/2020 12:46 PM, Mikael Vidstedt wrote:
> Please review this change which fixes the copyright headers for 300+ files. The vast majority of the changes are related to the formatting of the year ranges, but there are a few other types of fixes in there in an attempt to keep you awake while reviewing this.
>
> jbs: https://bugs.openjdk.java.net/browse/JDK-8237589
> webrev: https://cr.openjdk.java.net/~mikael/webrevs/8237589/webrev.00/open/webrev/
>
> Cheers,
> Mikael
>