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 bug32;
extern(C) int printf(char*, ...);

struct S
{
    char[] getName() { return name; }
    char[] name;
}

void main()
{
    S s = S("Kyle");
    char[] name = s.name;
    printf("%.*s\n", name.length, name.ptr);
}