Removed insufficient fix for DMD bug 1161, it was causing problems with instantiating imported templates, and passing private variables as aliases. I failed to come up with a proper fix!

module bug17;

struct Vec
{
    Vec opAdd(ref Vec b) { return Vec(); }
    Vec opMul(double a) { return Vec(); }
}
void main()
{
    Vec foo;
    Vec bar;
    auto whee=foo+bar*1f;
}