mixin(__MODULE__) fails if module name is "module"

[sigod via Digitalmars-d-learn]

E.g.:

module.d: (or just `module module;` in source file)
```
import std.stdio;

void main() {
     foreach (m; __traits(allMembers, mixin(__MODULE__))) { // 
module.d-mixin-4(4): Error: expression expected, not 'module'
         writeln(m);
     }
}
```

Documentation says:
> Package names cannot be keywords, hence the corresponding 
> directory names cannot be keywords, either.

Shouldn't keywords be disallowed for module names?