[svn r104] TONS OF FIXES. Split up declaration, constant initializer gen and definition for globals, structs, classes and functions. Improved ClassInfo support (not complete), not in vtable yet. Fixed a bunch of forward reference problems. Much more. Major commit! :)

module e;

struct C
{
    float x=0,y=0;

    float dot(ref C b)
    {
        return x*b.x + y*b.y;
    }
}

void main()
{
    C a,b;
    a.x = 2;
    a.y = 6;
    b.x = 3;
    b.y = 5;
    float f = a.dot(b);
    printf("%f\n", f);
    assert(f == 36);
}