added phase to remove unnecessary frame states from substitution snippets fixed debug scope used for snippet installation to capture all phases of installing a specific snippet with a filter (i.e. -G:MethodFilter) set for that snippet

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

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