v200 doc bundles: mzscheme, mzlib, mred

[Matthew Flatt <mflatt@cs.utah.edu>]

MzScheme, MzLib, and MrEd v200 documentation is now available in Help
Desk format. If you're using the 199.X code from CVS, update your docs
in the usual way. (See http://www.cs.utah.edu/plt/anoncvs/ if you've
forgotten what the usual way is.)

There are still problems at all levels, from content (the MrEd examples
still use the old class system) to formatting (#% names are in green,
the color for literals). But the content is certainly in shape enough
to be useful, since searching works.

To read the docs, you'll need the latest v200-tagged code, including
the latest in the "help" and "browser" collections.

Doc bundles for v200 are kept separate from the bundles for the 103.X
(exp-tagged) series.

One of the best features of the new documentation is that it is
constructed without the pain of latex2html. Instead, we've switched to
Dorai Sitaram's far superior tex2page (which is implemented in Scheme,
of course).

Matthew