* srfi-13.scm: Mark replacements.

* srfi-13.scm: Mark replacements.

* srfi-17.scm: Mark replacements.

* boot-9.scm (module-make-local-var!): Use module-add!.
(module-primitive-add!): New function.
(resolve-interface): Use
(call-with-deferred-observers, module-call-observers): New
functions.
(module-defer-observers, module-defer-observers-mute,
module-defer-observers-table): New variables.
(process-define-module, process-use-modules, export, re-export):
Use call-with-deferred-observers.

* syncase.scm (eval): Mark as replacement.

* boot-9.scm (defmacro-public): Use export-syntax instead of export.