Review request for JDK-8046590 fix doclint issues in swing classes, part 1 of 4

[Steve Sides]

Hello,

Could you please review the fix for the following bug:
https://bugs.openjdk.java.net/browse/JDK-8046590

Webrev corresponding:
http://cr.openjdk.java.net/~ssides/8046590/8046590.1/

This addresses missing @parm and @return block tags in javadoc for
javax/swing classes as noted by doclint and some reformatting.

thanks,

-steve