removed NIO byte buffer usage and added internal implementation of bytebuffer
removed NIO byte buffer usage and added internal implementation of bytebuffer

joakimeriksson/mspsim,nfi/mspsim,mspsim/mspsim,contiki-os/mspsim,cmorty/mspsim,contiki-os/mspsim,cmorty/mspsim,fvdnabee/mspsim,fvdnabee/mspsim,nfi/mspsim,mspsim/mspsim,joakimeriksson/mspsim,ransford/mspsim,ransford/mspsim