docs/125329: PACKAGEROOT should be documented in the Handbook

[Giorgos Keramidas]

>Number:         125329
>Category:       docs
>Synopsis:       PACKAGEROOT should be documented in the Handbook
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-doc
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          doc-bug
>Submitter-Id:   current-users
>Arrival-Date:   Sun Jul 06 08:10:02 UTC 2008
>Closed-Date:
>Last-Modified:
>Originator:     Giorgos Keramidas
>Release:        FreeBSD 8.0-CURRENT i386
>Organization:
>Environment:
System: FreeBSD kobe 8.0-CURRENT FreeBSD 8.0-CURRENT #0: \
Sat Jul 5 08:27:06 EEST 2008 build at kobe:/home/build/obj/home/build/src/sys/KOBE i386

>Description:

PACKAGEROOT and the other pkg_add(1) environment variables should
probably be documented, or at least referenced, in the Handbook too.
They are not 'obvious' for someone reading our Handbook and there's at
least one instance of a recent thread in freebsd-hackers where a user
didn't know about PACKAGEROOT at all.

>How-To-Repeat:
>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted: