pcp updates: libvirt, scripts

Changes committed to git://git.pcp.io/pcp.git master

Marko Myllynen (2):
      libvirt pmda: cosmetic update to connect script
      libvirt pmda: add support for new perf metrics

Nathan Scott (1):
      scripts: ensure correct tempfile handling used throughout


 man/man3/pmda.3                      |   10 +--
 src/include/pcp.env                  |   13 +++-
 src/pmcd/pmdaproc.sh                 |   97 +++++++++++++++++------------------
 src/pmdas/libvirt/connect            |    2 
 src/pmdas/libvirt/pmdalibvirt.python |    4 +
 5 files changed, 70 insertions(+), 56 deletions(-)


commit a2a727b24388375f52b8aa7de5e74619d90fdb53
Author: Marko Myllynen <[email protected]>
Date:   Wed Oct 5 12:04:29 2016 +1100

    libvirt pmda: add support for new perf metrics
    
    Support new perf metrics from libvirt version 2.3:
    https://libvirt.org/git/?p=libvirt.git;a=commit;h=bae660869de0612bee2a740083fb494c27e3f80c

commit f57656734ca1397e27312a0b6aa3da7ab4e0db9a
Author: Marko Myllynen <[email protected]>
Date:   Wed Oct 5 12:01:18 2016 +1100

    libvirt pmda: cosmetic update to connect script

commit faebf41be59418c7d829fd054048ff27cb5cd946
Author: Nathan Scott <[email protected]>
Date:   Wed Oct 5 11:37:46 2016 +1100

    scripts: ensure correct tempfile handling used throughout
    
    Auditing recent SElinux failure logs came across an accidental
    regression from recent changes, where we've started using /tmp
    directly in _get_pids_by_name rather than the tmpfile handling
    of the calling script.
    
    This is further complicated by pmdaproc.sh having some special
    tmpfile handling ($__tmp instead of $tmp) which also conflicts
    accidentally with same-named variable use in _get_pids_by_name.
    
    So, this change makes _get_pids_by_name use the $tmp scheme of
    the calling script.  It also updates pmdaproc.sh to share this
    same scheme (keeping $__tmp for Install/Remove back-compat).
    
    The PMDA(3) man page is updated to reflect this, and to correct
    the discussion of $__tmp (which was a directory even before the
    change being made here, so some wording there was NQR).
    
    It would be good to switch pcp/qa over to using mktemp rather
    than its own scheme, but thats a much larger change.  So, I've
    put a little note in _get_pids_by_name to this affect, and we
    allow it to continue to be called from QA (with a file prefix,
    rather than a directory prefix for tmpfiles, IOW).

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