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.packed1;

extern(C) int printf(char*, ...);

align(1)
struct PackedStruct
{
    ubyte ub;
    float f;
    long l;
    short s;
    ubyte ub2;
    short s2;
}

void main()
{
    PackedStruct[2] a = void;
    void* begin = a.ptr;
    void* end = &a[1];
    ptrdiff_t sz = end - begin;
    printf("size = 18 = %u = %u\n", PackedStruct.sizeof, sz);
    assert(sz == 18);
}