build: Add and organize octave_config_info variables. * build-aux/common.mk: Re-organize file to group related items. Alphabetize list of library flags and list of sed replacements. * changed configure.ac: Add QRUPDATE and UMFPACK CPPFLAGS and LDFLAGS to summary status printed at end of configure. * libinterp/interpfcn/toplev.cc (Foctave_config_info): Add missing variables from configure status message. Alphabetize list. * libinterp/oct-conf.in.h: Add missing variables from configure status message. Alphabetize list.

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