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 cond1;

void main()
{
    double a = 2;
    double b = 4;
    double c = (a > 0) ? a : b;
}