* reader.c (lookup_): Rename from lookup. Remove all lookups except
for numbers and symbols. Update callers.
* mes.c (make_symbol_): Rename from internal_make_symbol. Update
callers.
* module/mes/read-0.mes (lookup): New function.
(read-word): Remove all lookup calls, except for numbers and symbols.
* build-aux/mes-snarf.scm (symbol->names): New function
(function->environment): Initialize symbol.
(generate-includes): Also write .symbol-names.i.
* mes.c (mes_symbols): Include it. Remove internal_lookup_symbol.
* display.c (display): Handle display of nil in symbol list.
* reader.c (internal_lookup_symbol): Remove name-fu.
* mes.c (functions): New array.
(scm_t): Change function pointer to index.
(make_cell): Handle function.
(call): Update for function change.
(display_): Likewise.
(make_function): New function.
* build-aux/mes-snarf.scm (function->source): Update declarations.
(function->environment): New function.
* mes.c (function_t): New struct.
(type): One type for function.
(call): Refactor.
* build-aux/mes-snarf.mes: Use arity annotation. WAS: args. Update
annotations.
* mes.c (char_p, macro_p, number_p, pair_p, string_p, symbol_p,
vector_p, builtin_p, boolean_p): Move to type.c
* type.c: New file.
* GNUmakefile (mes.o): Depend on type snarf output.
* module/mes/loop-0.mes (cond, map, let, or, and not, evlis-env,
apply-env, eval-expand, uquote, add-unquoters, eval,
expand-macro-env, eval-begin-env, eval-if-env, sexp:define,
env:define, env:macro): Move to mes-0.mes.
* module/mes/mes-0.mes: New file.
* module/mes/type-0.mes: New file.
* scripts/include.mes: If BOOT, also include mes-0.mes. If TYPE0,
also include type-0.mes.
* mes.c: Move specific renames and n-args to alist annotation.
* build-aux/mes-snarf.scm: New file.
* GNUmakefile (mes.environment.h): Use it.
(mes.h): Remove.
(clean): Update.
(mes.o): New dependency rule.
* .gitignore: Update.
