revamp oct-conf.h * oct-conf.in.cc: New file. Use character strings in a namespace instead of macros to define configuration info. Omit configuration info beginning with ENABLE_ since those appear as macros in config.h * oct.conf.h: New file. * oct-conf.in.h: Delete. * config-features.sh: Also recognize macros beginning with ENABLE_ * toplev.cc (octave_config_info): Update to match changes in oct-conf.h and oct-conf-features.h. * __init_gnuplot__.cc (have_gnuplot_binar): Likewise. * libinterp/module.mk: Update for new files.

((nil .
      ((c-file-style . "gnu")
       (indent-tabs-mode . nil)
       (fill-column . 72)
       (eval . (when (and (buffer-file-name)
                          (string-match-p "\\.h\\'" (buffer-file-name))
                          (not (string-match-p "/gnulib/" (buffer-file-name))))
                 (c++-mode)
                 (c-set-style "gnu")))))
 (change-log-mode . ((indent-tabs-mode . t)))
 (makefile-mode . ((indent-tabs-mode . t))))