pcp updates

[Ken McDonell <kenj@xxxxxxxxxxxxxxxx>]

Changes committed to git://oss.sgi.com/kenj/pcp.git dev

 build/tar/postinstall |   57 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 57 insertions(+)

commit 4931bf70ea60816ed136bb7eed6cadf62b4360f4
Author: Ken McDonell <kenj@xxxxxxxxxxxxxxxx>
Date:   Thu Mar 7 15:45:13 2013 +1100

    tarball postinstall - add user/group entries
    
    Replicate debian logic for tarball distros ... need user pcp/pcp before
    pmcd will start from the init script.