<AWT Dev> [8] Review request for JDK-8025114: [cleanup] Eliminate doclint errors in java.awt.dnd files

[Yuri Nesterenko]

Hello,

please review a fix for

https://bugs.openjdk.java.net/browse/JDK-8025114: cleanup] Eliminate 
doclint errors in java.awt.dnd files

Webrev: http://cr.openjdk.java.net/~yan/jdk-8025114/

Objective is, as stated, to get rid of javadoc doclint error messages.
There's no changes in the formatted material.

Thanks,
-yan