Update verilog-mode.el to 2015-11-09-b121d60-vpo.

Update verilog-mode.el to 2015-11-09-b121d60-vpo.

* verilog-mode.el (verilog-auto, verilog-delete-auto)
(verilog-modi-cache-results, verilog-save-buffer-state)
(verilog-save-font-no-change-functions): When internally suppressing change
functions, use `inhibit-modification-hooks' and call
`after-change-funtions' to more nicely work with user hooks.  Reported by
Stefan Monnier.

(verilog-auto, verilog-delete-auto, verilog-delete-auto-buffer):
Create `verilog-delete-auto-buffer' to avoid double-calling
fontification hooks.

(verilog-restore-buffer-modified-p, verilog-auto)
(verilog-save-buffer-state): Prefer restore-buffer-modified-p over
set-buffer-modified-p. Reported by Stefan Monnier.

(verilog-diff-auto, verilog-diff-buffers-p)
(verilog-diff-ignore-regexp): Add `verilog-diff-ignore-regexp'.

(verilog-auto-inst-port, verilog-read-sub-decls-expr): Fix
AUTOINST with unpacked dimensional parameters, bug981. Reported by
by Amol Nagapurkar.

(verilog-read-decls, verilog-read-sub-decls-line): Avoid unneeded
properties inside internal structures. No functional change
intended.