Fixed a critical bug in the runtime, where _d_allocmemoryT would mark the memory block as having pointers (for scanning) opposite of what it should. So pointers would not be seen and freed. Should fix a bunch of regressions with AAs.

module mini.norun_debug3;

void main()
{
    int i = 42;
    int* ip = &i;

    int* fail;
    *fail = 0;
}