(verilog-getopt-file): Cleanup warning message format.

(verilog-getopt-file): Cleanup warning message format.
(verilog-auto, verilog-auto-arg, verilog-auto-ascii-enum)
(verilog-auto-inout, verilog-auto-inout-module)
(verilog-auto-input, verilog-auto-inst, verilog-auto-inst-param)
(verilog-auto-output, verilog-auto-output-every, verilog-auto-reg)
(verilog-auto-reg-input, verilog-auto-reset, verilog-auto-sense)
(verilog-auto-sense-sigs, verilog-auto-tieoff)
(verilog-auto-unused, verilog-auto-wire)
(verilog-decls-get-assigns, verilog-decls-get-consts)
(verilog-decls-get-gparams, verilog-decls-get-inouts)
(verilog-decls-get-inputs, verilog-decls-get-outputs)
(verilog-decls-get-ports, verilog-decls-get-regs)
(verilog-decls-get-signals, verilog-decls-get-wires)
(verilog-dir-cache-lib-filenames, verilog-dir-cache-list)
(verilog-dir-cache-preserving, verilog-dir-file-exists-p)
(verilog-dir-files, verilog-expand-dirnames, verilog-getopt-file)
(verilog-inject-sense, verilog-library-filenames)
(verilog-mode-release-date, verilog-mode-version)
(verilog-modi-cache-add, verilog-modi-cache-preserve-buffer)
(verilog-modi-cache-preserve-tick, verilog-modi-cache-results)
(verilog-modi-get-assigns, verilog-modi-get-consts)
(verilog-modi-get-gparams, verilog-modi-get-inouts)
(verilog-modi-get-inputs, verilog-modi-get-outputs)
(verilog-modi-get-ports, verilog-modi-get-regs)
(verilog-modi-get-signals, verilog-modi-get-sub-inouts)
(verilog-modi-get-sub-inputs, verilog-modi-get-sub-outputs)
(verilog-modi-get-wires, verilog-preserve-cache)
(verilog-preserve-dir-cache, verilog-preserve-modi-cache)
(verilog-read-sub-decls, verilog-read-sub-decls-line)
(verilog-read-sub-decls-sig, verilog-subdecls-get-inouts)
(verilog-subdecls-get-inputs, verilog-subdecls-get-outputs):
Add caching of additional state, and rework signal extraction
routines to improve AUTO expansion performance by 300%++.