Arbitrary size numerical types

[shishioko]

Add the ability to declare numerical types of non exponential sizes above and below the system's size for various uses.

u4 minecraftLightValue = 15;
s37 primeSized = 34568344456;
s24 myInteger = 123456;
u512 hash = SHA512.Hash("raa~~ :3");

Regarding bigger numbers, emulation algorithms using returned carry bits, among other techniques, could be used for math, which would have to be implemented on 32 bit systems for 64 bit data either way.