XDG init -- Doc updates.

XDG init -- Doc updates.

Brings all the docs relating to the init file up to date.

	* PROBLEMS: Update section on user-init-file

	* configure.ac (package-prefix): Use "user's home directory"
	instead of "~/.sxemacs".

	* etc/sample.init.el: Update comments.

	* etc/sxemacs.1: Update Files section regarding init.el.

	* info/lispref/os.texi (Start-up Summary): Update locations for
	init.el.

	* info/lispref/os.texi (Init File): Describe user-init-directory.

	* info/new-users-guide/custom1.texi: s/Emacs/SXEmacs/

	* info/new-users-guide/custom1.texi (Customization Basics): Cross
	reference `Init File'.

	* info/lispref/postgresql.texi
	(Building SXEmacs with PostgreSQL support): Comment out silly
	nonsence about "binary kits" and ftp sites. :)

	* info/sxemacs-faq.texi (Q1.0.2): Update.

	* info/sxemacs-faq.texi (Q1.0.3): Sources are at
	http://downloads.sxemacs.org/, not ftp.  And snapshots are on the
	web too.

	* info/sxemacs-faq.texi (Q1.4.1): Update and cross-ref `Init
	File'.  Remove talk of "migrating old .emacs".  We've never done
	that.

	* info/sxemacs/cmdargs.texi (Command Switches): Update.
	s/Emacs/SXEmacs/

	* info/sxemacs/custom.texi (Init File): Update.  Mention
	user-init-directory, cross-ref to lispref "Init File".

	* info/sxemacs/sxemacs.texi (Distrib): Point folks to
	http://downloads.sxemacs.org

	* lisp/ffi/ffi-magic.el: doc update example

	* lisp/files.el (user-init-file): Update doc.

	* lisp/info.el (Info-annotate): Ditto.

	* lisp/issue-tracker.el (report-sxemacs-bug-help): Ditto.

	* lisp/menubar-items.el (default-menubar): Don't hard-code
	"~/.sxemacs/init.el".

	* lisp/package-admin.el (package-admin-get-install-dir): comment update.

	* info/lispref/display.texi (Warnings): update.

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