* doc/intern.texi, doc/tar.texi: Update.
* doc/untabify.el: New file.
* doc/Makefile.am (EXTRA_DIST): Add untabify.el
(untabify, final, check-format, check-refs, check-fixmes)
(check-unrevised, all-check-docs, check-docs): New rules.
* doc/intern.texi, doc/tar.texi: Update.
* doc/untabify.el: New file.
* doc/Makefile.am (EXTRA_DIST): Add untabify.el
(untabify, final, check-format, check-refs, check-fixmes)
(check-unrevised, all-check-docs, check-docs): New rules.