Block sizes are sufficiently large enough to ensure no buffer overrun as block_pos is initialized to 0 every time a block is requested. It should cause a good performance increase on x86 and x86-64.
- 86Box's own headers go to /86box
- munt's public interface goes to /mt32emu
- all slirp headers go to /slirp (might want to consider using only its public inteface)
- single file headers from other projects go in include root
