move byte order types to cdi.h

ChangeLog

doc/tex/FUNCTIONS

doc/tex/Modules

doc/tex/c_grid.tex

doc/tex/c_ref.tex

doc/tex/c_stream.tex

doc/tex/c_taxis.tex

doc/tex/c_vlist.tex

doc/tex/c_vlist_var.tex

doc/tex/c_zaxis.tex

doc/tex/f_grid.tex

doc/tex/f_ref.tex

doc/tex/f_stream.tex

doc/tex/f_taxis.tex

doc/tex/f_vlist.tex

doc/tex/f_vlist_var.tex

doc/tex/f_zaxis.tex

doc/tex/makedoc

src/cdi.h

src/grid.c