Description of problem:
Metrics are not collected for resources on Windows that rely on metric data from Windows Performance Data Helper (PDH) API when the operating system language is something other then English. 

For example, an IIS resource on a Windows host:

Language............1046:Portuguese (Brazil)
Perflib lang id.....016

Contains the following messages in the agent log:
WARN  [MeasurementManager.collector-1] (rhq.core.pc.measurement.MeasurementCollectorRunner)- Failure to collect measurement data for Resource[id=10105, type=IIS, key=C:\WINNT\System32\inetsrv\inetinfo.exe, name=IIS, parent=myplatform.example.com, version=5.0], requests=[ScheduledMeasurementInfo[res=10105, name=Total Get Requests, sched=13824], ScheduledMeasurementInfo[res=10105, name=Bytes Sent/sec, sched=13802], ScheduledMeasurementInfo[res=10105, name=Current Connections, sched=13819], ScheduledMeasurementInfo[res=10105, name=Bytes Received/sec, sched=13804]], report.size()=11

org.hyperic.sigar.win32.Win32Exception: The specified object could not be found on the computer

	at org.hyperic.sigar.win32.Pdh.pdhAddCounter(Native Method)

	at org.hyperic.sigar.win32.Pdh.getValue(Pdh.java:294)

	at org.hyperic.sigar.win32.Pdh.getRawValue(Pdh.java:202)

	at org.rhq.plugins.iis.IISServerComponent.getValues(IISServerComponent.java:88)

	at sun.reflect.GeneratedMethodAccessor46.invoke(Unknown Source)

	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

	at java.lang.reflect.Method.invoke(Unknown Source)

	at org.rhq.core.pc.inventory.ResourceContainer$ComponentInvocationThread.call(ResourceContainer.java:525)

	at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)

	at java.util.concurrent.FutureTask.run(Unknown Source)

	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)

	at java.lang.Thread.run(Unknown Source)


Version-Release number of selected component (if applicable):
3.0.1

Additional info:
This is due to how Windows PDH stores these performance metric names and how Sigar queries them. See http://support.microsoft.com/kb/287159 for more details.