[pcp] pcp updates

[Ken McDonell]

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

 src/pmlogreduce/pmlogreduce.c |   16 ++++++++++------
 src/pmlogreduce/rewrite.c     |   37 +++++++++++++++++++++----------------
 2 files changed, 31 insertions(+), 22 deletions(-)

commit 5f08513b23b6dc6f5dc3dffd195d523dc20d2f3f
Author: Ken McDonell <kenj at internode.on.net>
Date:   Wed Jun 1 23:43:58 2011 +1000

    pmlogreduce - fix 2 problems
    
    1. a memory leak issue identified and triaged by SGI (thanks to
       Arthur Kepner and Jason Lim for this)
    
    2. if no qualifying metrics were found in an output sample interval
       (this is something of a rare case for most use patterns), the code
       previously generated a bogus "mark" record ... this has been fixed
       and no output record is written when this happens