Title: winperf_phydisk: allow device to appear more than one time in agent output
Level: 1
Component: checks
Compatible: compat
Version: 1.2.7i1
Date: 1426000114
Class: feature

This can e.g. be the case in Windows clusters, where the drive letter <tt>E:</tt> appears
three times. The check now adds up all counters of the three devices - just like in the
summary check.
