Re: FYI: 17-gary-move-option-globals-to-context.patch

[Akim Demaille]

 >      Two related changes, and a huge knockon effect throughout the
 >      source: Moved the option variables out of global space and into
 >      `struct m4'; made `m4_symtab' a real datatype, so that it's api

its

 >      is not marred passing `struct m4' around just so it can decide
 >      whether to keep traced symbol names or not.  Added setters and
 >      getters for the formerly global option variables, and obviously
 >      changed a vast number of functions to take a `struct m4' and use
 >      the getter funcs to find option values.