Override assert handler

[Walter Bright]

On 8/17/2024 2:31 AM, Manu wrote:
> I mean, there's also the `assertHandler()` stuff, but I don't really see the 
> point; I'd rather just replace the assert handler symbol directly.
> Using `assertHandler` is awkward because you need a static constructor to 
> register it at runtime, and then anything you do in your assert handler almost 
> inevitably leads to bootup issues with cyclic module dependencies because 
> everything leads back to assert.

Yes, that is a botched design that makes things much more complicated than 
necessary.