* g77.texi (Aligned Data): Remove obsolete paragraph including a
	broken link.
	(Floating-point Errors): Remove links to http://www.validgh.com/
	which was "hijacked".
	(Language): Fix link to Fortran books.
	(Projects): Remove obsolete paragraph including a broken link to
	ftp://alpha.gnu.org/gnu/g77/projects/.
	(Trouble): Remove obsolete paragraph including a broken link to
	ftp://alpha.gnu.org/g77.plan.

	* invoke.texi (Overall Options): Remove broken reference to
	rat7.uue (which was of dubious copyright status anyways).

	* root.texi (www-burley): Fix URL.

From-SVN: r79776