Made mx.run work properly when stderr is redirected to stdout. Made outputparser redirect stderr to stdout. Added copyright headers to outputparser.py and sanitycheck.py. Reverted class path construction in mx.build() to use includeSelf=True to fix regression when running 'mx build -c'.

public class T
{
  public static boolean foo(boolean bar)
  {
    return bar;
  }

  public static void printIt()
  {
    System.out.println("Hello");
  }
}