byteswap functions aren't publicly exposed

[aanderse]

can we get the byteswap functions publicly exposed
i'm pretty sure i asked hybrid about this many moons ago and he agreed they should be

sound good?

[hybrid]

Yes, I think I even started on this somewhere. This will surely come in, but the interface is uglier than the RNG part. This and some include problems made this module harder to integrate and I got distracted now for a while (from Irrlicht completely...). Will become better in th enext weeks, hopefully.