byteordr.h: Thanks to Simon Archipoff, this header is now much clearer. The useless dirty name trick is now gone.
byteordr.c: Using the same technique for cleaning byteordr.h, byteordr.c have now proper functions rather tahn some dirty tricks. I haven't took the time to check if I could optimise theses functions, it's not the point. The game is still compiling and running smoothly, this is great