Add further separation of dynamically allocated pages?

[Sword-Smith]

Currently the dynamic allocator can allocate $~2^{31}$ memory pages, each of size $2^{32}$ words. Since we're concerned about memory consistency, we might as well separate these more such that only e.g. ${2^{-10}}$ of the pages can be allocated by the dynamic allocator, starting with page $2^{10}$.

That should make it harder to use field getters and ND-initialized memory to maliciously manipulate memory.

[Sword-Smith]

See #130 for a solution to this, and consider if we want this behavior with the drawback it gives to triton-tui.