RFR 8160641: PostProcessingPlugin and ExecutableImage should not be part of plugin API

[Mandy Chung]

> On Jun 30, 2016, at 4:08 AM, Sundararajan Athijegannathan <sundararajan.athijegannathan at oracle.com> wrote:
> 
> Please review http://cr.openjdk.java.net/~sundar/8160641/webrev.00/ for
> https://bugs.openjdk.java.net/browse/JDK-8160641

Looks okay to me.

The copyright start year is changed in ExecutableImage.java and PostProcessor.java. Since they are renamed, the original start year should be retained.

Mandy