RFR: 13,docs JDK-8228494 Update nroff version of man pages

[Jonathan Gibbons]

Please review an update to the nroff pages for JDK 13.
(There are 3 new pages and 2 modified pages.)

This is noreg-doc, so no further approvals are required for RDP2.

-- Jon

JBS: https://bugs.openjdk.java.net/browse/JDK-8228494
Webrev: 
http://cr.openjdk.java.net/~jjg/8228494-update-nroff-pages/webrev.00/