#1 Lout support

[Darren Bane]

nuweb could support Lout
(http://snark.ptc.spbu.ru/~uwe/lout/lout.html) as well
as LaTeX for formatting.

From reading nuweb.w, I know roughly how to do this:

* Port the .sty files to Lout

* Tell users to set the escape char to \ at the top of
every file

* Write parallel support for Lout output instead of
LaTeX along the lines of HTML (i.e. anything ending in
.lw gets targetted to Lout). Ideally, this would be
aliterate program written in Lout, for a demo :-)

Lout already has support for pretty-printing
programming languages (it will handle any character in
the input, etc.) This could be extended for a generic
'Code' programming language which didn't do any
highlighting.

I can't promise any end date, but I researched the
above and wrote about 20-30 LOC. I'd like you to put
it in the subprojects section just so that nobody
duplicates the work.