bin/46014: postinstall atf does not work for pre-atf systems

[mrg%eterna.com.au@localhost]

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        It was set to the default value of `sw-bug'.

>Number:         46014
>Category:       bin
>Synopsis:       postinstall atf does not work for pre-atf systems
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    bin-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Mon Feb 13 00:30:00 +0000 2012
>Originator:     matthew green
>Release:        NetBSD 5.99.65
>Organization:
people's front against (bozotic) www (softwar foundation)
>Environment:
Architecture: i386
Machine: i386
>Description:

when running 'postinstall check' on an older system this occurs:

        atf check:
        grep: /etc/atf/common.conf: No such file or directory

it would be nice if this actually copied the files in place.  i assume
this requires the install requiring to be pre-atf.

>How-To-Repeat:
        
        see above.

>Fix: