Type.stringof is removing alias and bitmanip

[deadalnix via Digitalmars-d]

As a result, it is impossible to use thing like bitfields in 
templates.

I'm trying to do something like
struct MySuperStruct(E) {
        enum DataSize = ulong.sizeof * 8 - EnumSize!E;
        
        import std.bitmanip;
        mixin(bitfields!(
                E, "kind", EnumSize!E,
                ulong, "data", DataSize,
        ));
        
        // More stuuuuuuufffffff \o/
}

But obviously, that won't work as mixins are using the real type 
of E, and not E. I ran into that problem on other forms, and 
always was able to work around it, but on that one, there is no 
way around it.