Sync with upstream verilog-mode revision 702457d

Sync with upstream verilog-mode revision 702457d

* lisp/progmodes/verilog-mode.el (verilog-mode-version): Update.
(create-lockfiles): Declare.
(verilog-read-decls): Fix module header imports, bug709.
Reported by Victor Lau.
Fix parsing 'var' in AUTOs, msg1294.  Reported by Dominique Chen.
(verilog-auto-inout-module): Fix AUTOINOUTMODULE not inserting
interface-only modules, bug721.  Reported by Dean Hoyt.