install/50020: postinstall doesn't fixup man.conf for use with mandoc

[jnemeth%CornerstoneService.ca@localhost]

>Number:         50020
>Category:       install
>Synopsis:       postinstall doesn't fixup man.conf for use with mandoc
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    install-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Jul 02 02:45:00 +0000 2015
>Originator:     John Nemeth
>Release:        NetBSD 6.1_STABLE (actually any version from 6.0 onwards)
>Organization:
>Environment:
System: NetBSD server 6.1_STABLE NetBSD 6.1_STABLE (JNGATE) #1: Sat Oct 4 06:30:12 PDT 2014 root@:/sys/arch/amd64/compile/JNGATE amd64
Architecture: x86_64
Machine: amd64
>Description:
	postinstall doesn't fixup man.conf for use with mandoc.  Ideally
        this should be fixed before NetBSD 7.0 is released.
>How-To-Repeat:
	Update your system from a version prior to 6.0.  Notice that man(1)
        still uses nroff to format man pages and that the daily run
        produces a complaint about _mandb missing from man.conf.
>Fix:
	Have postinstall adjust man.conf or complain if it is out of date.