couple of these are currently found in index data, but these should
all be handled in the same way.

Closes SF bug #952737.

in response to Skip's comments in SF bug #487165.

Make use of string methods instead of string module functions in most places.
Add (and make the default) a way to collapse symbol entries into a single
"Symbols" section in the generated index.  This is similar to what makeindex
does, but does not include entries beginning with an underscore.

main():  Moved the node processing between input and ouptut to
	 process_nodes().

changes to the HTML documentation.

processed.  This can be interesting to see.

Basically, it now works and produces a nice-looking HTML index.

Shows some promise for extensibility, but still young.  Needs useful comments.

easier to work with than the Perl code.