install: new performance counters provider guid

The io.js performance counters manifest conflicts with the one from
node, causing installer failures. Change the GUID in the io.js
performance counters manifest file to resolve the conflicts.

Fixes: #524
PR: #1001
Reviewed-by: Bert Belder <bertbelder@gmail.com>

src/res/node_perfctr_provider.man

@@ -8,7 +8,7 @@
         <provider symbol="NodeCounterProvider"
                   applicationIdentity="iojs.exe"
                   providerType="userMode"
-                  providerGuid="{1E2E15D7-3760-470E-8699-B9DB5248EDD5}">
+                  providerGuid="{793C9B44-3D6B-4F57-B5D7-4FF80ADCF9A2}">
           <counterSet symbol="NodeCounterSet"
                       guid="{3A22A8EC-297C-48AC-AB15-33EC93033FD8}"
                       uri="Microsoft.Windows.System.PerfCounters.NodeCounterSet"