extend.texi (Variable Attributes): Use @ref instead of @xref.

extend.texi (Variable Attributes): Use @ref instead of @xref.

2008-06-28  Sandra Loosemore  <sandra@codesourcery.com>

	gcc/
	* doc/extend.texi (Variable Attributes): Use @ref instead of @xref.
	(Type Attributes): Fix nesting of @table and @subsection.  Adjust
	punctuation.  Use @ref instead of @xref.
	(Function Names): Remove stray @display/@end display.
	(C++ Attributes): Use @ref instead of @xref.
	(Deprecated Features): Fix punctuation around @xref.
	(Backwards Compatibility): Likewise.
	* doc/rtl.texi (Incdec): Remove stray @table/@end table.

From-SVN: r137234