Refactoring build script on Psake

new.ps1

task Clean {
    exec -maxRetries 3 {
        Get-ChildItem . -Include bin,obj,*.orig -Recurse | Remove-Item -Recurse -Force
    }
}

old.ps1

task Clean {    
    $iteration = 0            
    while($iteration++ -lt 10) {
        $Files = @(Get-ChildItem . -include bin,obj,*.orig -Recurse)
        $count = $Files.length
        if ($count -ne 0) {
            foreach ($File in $Files) {
                Remove-Item $File -Recurse -Force  -EA SilentlyContinue
            }
        }            
        else {
            Write-Host "$iteration - iteration"
            break
        }            
    }
    $files = @(Get-ChildItem . -include bin,obj,*.orig -Recurse)
    $count = $files.length
    if ($count -ne 0) {            
        throw "not empty after $iteration iterations, $count - files: $files"
    }
}