Compiler: Type checks not performed on `super` calls

Hi @joshtynjala,

I just noticed that the compiler is not performing type checks for `super` calls in constructors.

Having this would prevent runtime errors by detecting issues at compilation time.

The following code compiles fine but fails at runtime:

```as3
package
{
public class SuperTypeCheckTest
{
public function SuperTypeCheckTest()
{
new B();
}
}
}

import flash.geom.Point;

class A
{
public function A(point:Point)
{

}
}

class B extends A
{
public function B()
{
super(42); // TypeError: Error #1034: Type Coercion failed: cannot convert 42 to flash.geom.Point.
}
}
```

Best,
Aurélien