pcp updates - fix build failure, tart up pmhostname

[Ken McDonell <kenj@xxxxxxxxxxxxxxxx>]

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

 src/libpcp_pmcd/src/GNUmakefile |    2 -
 src/pmhostname/pmhostname.c     |   79 +++++++++++++++++++++++++++++++++++-----
 2 files changed, 72 insertions(+), 9 deletions(-)

commit f7efeb3216e3ba68c8cc3c1f0afd75c8e3cdc83a
Author: Ken McDonell <kenj@xxxxxxxxxxxxxxxx>
Date:   Mon Sep 9 06:06:02 2013 +1000

    libpcp_pmcd - build failure
    
    Wrong guard round install lines ... pmcd.stp is not created
    unless $(ENABLE_PROBES) is true.

commit 7f944c2f80e48130fe5f41e5405f1ad497feaf1a
Author: Ken McDonell <kenj@xxxxxxxxxxxxxxxx>
Date:   Mon Sep 9 06:04:23 2013 +1000

    pmhostname - add -D on the command line
    
    So I can expose diagnositics when it is not working.