pkg/51249: KDM of KDE4 does not add kdm user

[nolden%kde.org@localhost]

>Number:         51249
>Category:       pkg
>Synopsis:       KDM of KDE4 does not add kdm user
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    pkg-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Jun 15 13:45:01 +0000 2016
>Originator:     Ralf Nolden
>Release:        7.0
>Organization:
KDE
>Environment:
NetBSD 7.0
>Description:
On installing kde-workspace4, KDM is installed but no kdm user added (unlike kdebase3's kdm), so using the example rc.d kdm script and adding kdm=YES to rc.conf will fail on reboot due to the missing kdm user.
>How-To-Repeat:
Install kde-workspace4 (or meta-pkg/kde4), copy the examples/rc.d/kdm to /etc/rc.d/kdm and add "kdm=YES" to /etc/rc.conf, reboot. The starting of KDM fails due to the missing kdm user.
>Fix: