(texi2html.py): Tightened the generated HTML slightly. Added -p option to

	print section titles even when the debugging output is not enabled.
	Added -3 option to generate HTML 3.0 constructs where meaningful.

	Removed repititive garbage generation:  the old version added simple
	descriptive comments after every datadesc/funcdesc/*desc entry:

	function(args) -- function of module xxxx
	    Description....

	These comments are no longer generated:

	function(args)
	    Description....