Cleanup of javadoc in javax.print package

Summary

The javadoc improvements in javax.print package.

Problem

There are a number of typos and outdated templates which are used in these documentation.

Solution

The javadoc specification was updated and unified.

Specification

The specdiff is attached. The link for convenience: http://cr.openjdk.java.net/~serb/8184435/specdiff.08/overview-summary.html