Declaration file for the method overload is not emitted correctly

``` TypeScript
class c {
    public Intersects(obj: number): boolean;
    public Intersects(obj: any): boolean {
        return false;
    }
}
```

Expected:

``` TypeScript
declare class c {
    Intersects(obj: number): boolean;
}
declare var x: c;
```

Currently:

``` TypeScript
declare class c {
    Intersects(obj: number): boolean;
    Intersects(obj: any): boolean;
}
declare var x: c;
```
