[svn r231] Changed: warnings are no longer treated as an error. Added some comments and cleaned up CallExp::toElem a tiny bit. Fixed: struct literals always reported inplace assignment even if they allocated a temporary. Fixed: passing stuff to a D-style vararg which did inplace assignment was generated suboptimal code.

module bug20;

void func(void delegate() dg)
{
    dg();
}

void main()
{
    int i = 42;
    void delegate() dg = {
        i++;
    };
    printf("i = %d\n",i);
    func(dg);
    printf("i = %d\n",i);
    assert(i == 43);
}