* progmodes/verilog-mode.el (verilog-xemacs-menu): Remove XEmacs

* progmodes/verilog-mode.el (verilog-xemacs-menu): Remove XEmacs
conditional.
(verilog-font-grouping-keywords-face): Make the begin..end
keywords standout more than other verilog keywords.
(verilog-type-font-keywords): Move the begin..end out of this list
to facilitate making them to (potentially) stand out more.
(verilog-backward-token): Fix indent of bare always{_*}?, initial,
function & task blocks.
(verilog-behavioral-block-beg-re): Fix indent of bare always{_*}?,
initial, function & task blocks.
(verilog-forward-sexp): Handle the new "disable fork" statement of
IEEE-1800 Verilog.
(verilog-beg-block-re-ordered): Handle the new "disable fork"
statement of IEEE-1800 Verilog.
(verilog-calc-1): Handle the new "disable fork" statement of
IEEE-1800 Verilog.
(verilog-disable-fork-re): Add const to help handle the new
"disable fork" statement of IEEE-1800 Verilog.
(verilog-declaration-core-re): Add port directions by themselves,
with no qualification, as base item of a declaration.
(verilog-pretty-declarations): Add new flag to ask it to refrain
from printing to the message buffer.
(verilog-pretty-expr): Add a QUIET flag to ask it to refrain from
printing to the message buffer.  Improve handling of the many
types of expression line up.
(verilog-just-one-space): Remove printing of an empty message.
(verilog-get-lineup-indent): Rework to support the better handling
of expression lineup for verilog-pretty-expr.
(verilog-auto-wire): Pass the quiet flag to verilog-pretty-expr.