Use SMIE's blink-paren for octave-mode.

Use SMIE's blink-paren for octave-mode.
* lisp/progmodes/octave-mod.el (octave-font-lock-close-quotes):
Backslashes do not escape single-quotes, single-quotes do.
(octave-block-else-regexp, octave-block-end-regexp)
(octave-block-match-alist): Remove.
(octave-smie-bnf-table): New var, with old content.
(octave-smie-op-levels): Use it.
(octave-smie-closer-alist): New var.
(octave-mode): Use it.  Setup smie-blink-matching and electric-indent.
(octave-blink-matching-block-open): Remove.
(octave-reindent-then-newline-and-indent, octave-electric-semi)
(octave-electric-space): Let self-insert-command run expand-abbrev and
blink parens.