Bring some consistency to command line switches

Bring some consistency to command line switches

We have UNIX style single dash cmdline long-opts, and GNU style double
dash cmdline long-opts, but not every single dash long-opt has a
corresponding double dash long-opt, and vice verse.  This changeset
rectifies that.

	* lisp/startup.el (command-line-early): Add missing GNU style
	`--long-option' for all `-long-option' that were lacking it.
	(startup-setup-paths): ditto.
	(command-switch-alist): Add `-h'.

	* info/sxemacs/cmdargs.texi: Add missing command switches.

	* src/emacs.c (main_1): Add `-show-dump-id', `-terminal',
	`-no-dump-file', `-color-terminal', `-no-windows', `-h' command
	switches.

Signed-off-by: Steve Youngs <steve@sxemacs.org>