First attempt at at class lifter for the GHC GOO backend.

This included a cleanup of the Java/GOO abstract syntax
  - Name is now a string, not a list of string
  - Type is used instead of name in some places
      (for example, with new)
  - other minor tweeks.

Andy

---------
Example for myS f g x = f x (g x)

public class myS implements Code {
  public Object ENTER () {
    VM.COLLECT(3, this);
    final Object f = VM.POP();
    final Object g = VM.POP();
    final Object x = VM.POP();
    VM.PUSH(x);
    VM.PUSH(new Thunk(new Code(g, x)));
    return f;
  }
}
class myS$1 {
  final Object g;
  final Object x;
  public myS$1 (Object _g_, Object _x_) {
    g = _g_;
    x = _x_;
  }
  public Object ENTER () {
    VM.PUSH(x);
    return g;
  }
}