pcp updates

[Mark Goodwin <mgoodwin@xxxxxxxxxx>]

Changes committed to git://oss.sgi.com/markgw/pcp/pcp.git dev
(note: 'dev' branch since my proc_pmda branch has been merged to dev now)

commit d773da935c9b78f08baf2f4dfb25751dae0aa97b
Author: Mark Goodwin <mgoodwin@xxxxxxxxxx>
Date:   Thu Aug 9 12:57:38 2012 +1000

    For the proc PMDA, don't build or install help.{dat,pag}
    since these are built from 'help' when ./Install is run.

        modified:   src/pmdas/linux_proc/GNUmakefile