Free Pascal support

```
Do you plan to add support for Free Pascal?  I downloaded the 2.3 package, 
modified the MSTimer unit, and got the demo running, but collisions are all 
handled wrongly - both colliding objects either disappear, or go out of bounds.

Thanks.
```

Original issue reported on code.google.com by `yeoh...@myjaring.net` on 27 Apr 2012 at 8:02
