Disallow thread local concepts to allow fibers move between threads @notl

[Richard (Rikki) Andrew Cattermole]

On 15/06/2024 8:50 AM, Sebastiaan Koppe wrote:
> On Friday, 14 June 2024 at 17:30:27 UTC, Richard (Rikki) Andrew 
> Cattermole wrote:
>>
>> Destroy!
> 
> Instead of introducing 3 new attributes I think its a lot better to make 
> TLS @system instead.
> 
> TLS should be used sparingly anyway, so making its usage more difficult 
> is a lot cheaper than extra attributes than make everything else harder.

That doesn't help ``TaskLocal`` which is a fiber-local wrapper in 
vibe.d, it should be stored in TLS.

You end up needing a whitelist solution.