Shouldn't pmrep use the default config file?

[Jamie Bainbridge <jamie.bainbridge@xxxxxxxxx>]

The pmrep manpage invites you to use a metric spec, but this does not
work by default:

# pmrep -p -b MB vfs.inodes.count :vmstat
Metric set definition ':vmstat' not found.

One has to specify the supplied config file for the command to work:

# pmrep -p -b MB vfs.inodes.count -c /etc/pcp/pmrep/pmrep.conf :vmstat

Shouldn't pmrep use this default config file, and users can
modify/specify their own if they want to? This probably provides a
better initial experience and is more in line with other tools with a
config file.

If you're happy with this, lmk and I'll submit a patch.

Jamie