Passing through extra arguments to msbuild for our powershell script.

run-build.ps1

@@ -7,7 +7,9 @@ param(
     [string]$Configuration="Debug",
     [string]$Architecture="x64",
     [switch]$NoPackage,
-    [switch]$Help)
+    [switch]$Help,
+    [Parameter(Position=0, ValueFromRemainingArguments=$true)]
+    $ExtraParameters)
 
 if($Help)
 {
@@ -62,5 +64,5 @@ $env:PATH = "$env:DOTNET_INSTALL_DIR;$env:PATH"
 # Disable first run since we want to control all package sources
 $env:DOTNET_SKIP_FIRST_TIME_EXPERIENCE=1
 
-dotnet build3 build.proj /p:Architecture=$Architecture
+dotnet build3 build.proj /p:Architecture=$Architecture $ExtraParameters
 if($LASTEXITCODE -ne 0) { throw "Failed to build" }