(verilog-easy-menu-filter): New function.

(verilog-easy-menu-filter): New function.
(verilog-stmt-menu, verilog-menu): Add :help.
(verilog-customize, verilog-font-customize)
(electric-verilog-backward-sexp, electric-verilog-forward-sexp)
(verilog-mode): Update documentation strings to match tool tips.
(verilog-auto-search-do, verilog-auto-re-search-do)
(verilog-skip-forward-comment-or-string): Fix verilog-auto
expansion when a .* appears inside a string.
(verilog-re-search-forward, verilog-re-search-backward): Add
comment to recall how this works.