Try embedding C# into strings where appropriate

[michaelblyons]

In places like this, can we embed C# highlighting?

PowerShell/Tests/syntax_test_reindent.ps1

Lines 3 to 8 in c570b7e

	Add-Type @"
	using System; using System.Runtime.InteropServices; public class ClassGetForegroundWindow {
	[DllImport("user32.dll")]
	public static extern IntPtr GetForegroundWindow();
	}
	"@