Clarify byte order encoding support in Yamcs
Clarify byte order encoding support in Yamcs

see #492

fqqb/yamcs,fqqb/yamcs,m-sc/yamcs,yamcs/yamcs,yamcs/yamcs,fqqb/yamcs,yamcs/yamcs,yamcs/yamcs,m-sc/yamcs,yamcs/yamcs,fqqb/yamcs,m-sc/yamcs,fqqb/yamcs,fqqb/yamcs,m-sc/yamcs,yamcs/yamcs,m-sc/yamcs,m-sc/yamcs