RFR: 24: Allow lazy evaluation of the fullName field in HostUserDetails

[Robin Westberg via github.com]

The pull request has been updated with additional changes.

----------------

Added commits:
 - ae7bf6c6:	Remove the assert

Pull request:
http://git.openjdk.java.net/skara/pull/9

Webrevs:
 - full: https://openjdk.github.io/cr/skara/9/webrev.01
 - inc: https://openjdk.github.io/cr/skara/9/webrev.00-01

Updated full patch:
http://git.openjdk.java.net/skara/pull/9.diff

Fetch command:
git fetch https://github.com/openjdk/skara.git ae7bf6c6:pr/9