Make texinfo 5.x not break the build

Make texinfo 5.x not break the build

	These changes are mostly promoting sections to chapters and subsections to sections.

	* info/custom.texi (Declaring Groups): Promote to chapter
	* info/custom.texi (Declaring Variables): Ditto.
	* info/custom.texi (Declaring Faces): Ditto.
	* info/custom.texi (Usage for Package Authors): Ditto.
	* info/custom.texi (Utilities): Ditto.
	* info/custom.texi (The Init File): Ditto
	* info/custom.texi (Wishlist): Ditto
	* info/widget.texi (Introduction): Ditto
	* info/widget.texi (User Interface): Ditto
	* info/widget.texi (Programming Example): Ditto
	* info/widget.texi (Setting Up the Buffer): Ditto
	* info/widget.texi (Basic Types): Ditto
	* info/widget.texi (Sexp Types): Ditto
	* info/widget.texi (Widget Properties): Ditto
	* info/widget.texi (Defining New Widgets): Ditto
	* info/widget.texi (Widget Browser): Ditto
	* info/widget.texi (Widget Minor Mode): Ditto
	* info/widget.texi (Utilities): Ditto
	* info/widget.texi (Widget Wishlist): Ditto
	* info/widget.texi (Widget Internals): Ditto

	* info/lispref/edebug-inc.texi (Instrumenting Macro Calls): Use
	itemize instead of table. Texinfo 5 refuses a table with @bullet.

	* info/lispref/faces.texi (Face Properties): Add @item for each paragraph.

	* info/sxemacs-faq.texi: Inline tex for removed @hfill
	* info/term.texi: remove problematic start @
	* info/term.texi: Use {} instead of ()

	* info/lispref/packaging.texi (Makefile Targets): Promote to section
	* info/sppm.texi (Voting): Ditto
	* info/sppm.texi (Coding Style): Ditto.
	* info/sppm.texi (Setting up a publicly accessible repo): Ditto
	* info/sppm.texi (Setting up a publicly accessible repo): Ditto
	* info/widget.texi (Editable text fields): Ditto
	* info/widget.texi (The link widget): Ditto
	* info/widget.texi (The url-link widget): Ditto
	* info/widget.texi (The push-button widget): Ditto
	* info/widget.texi (The editable-field widget): Ditto
	* info/widget.texi (The menu-choice widget): Ditto
	* info/widget.texi (The radio-button-choice widget): Ditto
	* info/widget.texi (The item widget): Ditto
	* info/widget.texi (The choice-item widget): Ditto
	* info/widget.texi (The toggle widget): Ditto
	* info/widget.texi (The checkbox widget): Ditto
	* info/widget.texi (The checklist widget): Ditto
	* info/widget.texi (The editable-list widget): Ditto
	* info/widget.texi (The group widget): Ditto
	* info/widget.texi (constants): Ditto
	* info/widget.texi (generic): Ditto
	* info/widget.texi (atoms): Ditto
	* info/widget.texi (composite): Ditto
	* info/widget.texi (The Widget and Type Structures): Ditto

Signed-off-by: Nelson Ferreira <nelson.ferreira@ieee.org>