(Q_compat_of): Deleted.

(Q_compat_of): Deleted.
(put_char_composition): Return `<-FOO' for compatibility mapping to
single character tagged `FOO'; use `Fsymbol_name (...)' instead of
`symbol_name (XSYMBOL(...))'.
(Fput_char_attribute): Convert char-specs in value of
`{<-|->}font[^*]*' to characters and put reverse links.
(Fsave_char_attribute_table): Don't refer Q_compat_of.
(syms_of_chartab): Delete builtin symbol `<-compat'.