Clean up asm code a bit. - Use vector instead of Array, reducing allocations. - Use vectors instead of deques since we only push_back and index. - Remove redundant typedefs of iterators. - Comment out unused variable (used only in commented-out GDC code). - A few whitespace changes.

module bug47;

bool func(bool a, bool b)
{
    if (a) b = false;
    return b;
}

void main()
{
    assert(func(0,0) == 0);
    assert(func(0,1) == 1);
    assert(func(1,0) == 0);
    assert(func(1,1) == 0);
}