qa/635 - netstat -i output is not always the same!

Grrr ... Fedora is different!

Reengineer and generalize the test script's awk to have keywords
in the header line drive column selection.
configure.in - remove -O2 from CFLAGS

We take care of -O2 in the builddefs ... it was being set redundantly
in two places and I don't believe it is needed for configure to run
correctly.
builddefs & libpcp - move C optimization flags to CFLAGS_OPT

Isolating the C compiler oprimization flags in $(CFLAGS_OPT) allows
them to be over-ridden to build versions of the libraries and
apps for other purposes, like debugging, code coverage analysis,
profiling, ... only use so far is for libpcp.
qa/555 - learn about systemctl

For some platforms this is the preferred way to control rsyslogd.
qa/admin scripts - more fiddling about
Merge branch 'dev' of git://oss.sgi.com/pcp/pcp into dev
Merge branch 'ryan' of git://github.com/ryandoyle/pcp into dev
Merge branches 'dev' and 'ryan' into ryan