[16] RFR: 8251182: Fix "no comment" warnings in java.naming

[Aleks Efimov]

Hi,

The documentation of classes from "java.naming" module needs to be 
improved to resolve javadoc -Xdoclint "no comment" warnings.

JBS issue: https://bugs.openjdk.java.net/browse/JDK-8251182
Webrev: http://cr.openjdk.java.net/~aefimov/8251182/00/index.html
CSR: https://bugs.openjdk.java.net/browse/JDK-8252310

With Best Regards,
Aleksei