Added IrTypeFunction and IrTypeDelegate and eliminated IrDType. This means the Type::ir field can be removed. It's the final part needed for the move to a slightly more sane type system. Now the whole thing just needs to be cleaned up :P Added -v-cg switch, which right now just prints "codegen: module.name (module/name.d)" to stdout, this can really help figuring out where, in some complex build command, things go wrong.

module mini.norun_debug10;

struct Vec2
{
    float x,y;
}

void main()
{
    Vec2 v2;
    char[] str = "hello";
    int i = void;
    float f = 3.14;
    func(v2, v2, str, i, f);
}

void func(Vec2 v2, ref Vec2 rv2, char[] str, out int i, ref float f)
{
    int* fail;
    *fail = 0;
}