Add ImportC compiler to dmd

[Walter Bright]

On 5/12/2021 2:24 AM, xBuzz wrote:
> I'm gonna say something you don't like.

I don't mind. But I will say that show me a language that isn't getting a 
constant stream of bug fixes, improvements, etc., and I'll show you a dead language.

Every D changelog is full of bug fixes and improvements.

The true measure of a language its not its perfection, but its utility. Is D 
usable to easily create great programs? Hell yes!

The only perfect languages are very small ones, and nobody uses them, because 
you can't do anything with them. The real world is dirty, and useful languages 
wind up being dirty to be able to play in the real world.

As for ImportC, people have been asking for easy importation of C code for 
decades. D's inability to do that is very clearly a large barrier to adoption. I 
hear about this *all* the time.

I decided to take a sledgehammer and bash that problem out of existence. It's 
absolutely what the D community ought to be doing.