adding my xml parser to stdlib

[Denys Duchier]

stdlib does not currently _officially_ offer any xml support - I
refrained from officially releasing anything (for a few years) to gain
more experience through various experimental implementations.  I am
quite satisfied with my current MOGUL offering and, unless there is
opposition, I propose to make it an official part of stdlib.  It is
pure Oz (no external parsing tool), supports namespaces, processes
internal DTD subsets, respects entity declarations, and can be easily
customized by subclassing - it can also perform whitespace stripping
on the fly according to strip/preserve declarations.  It has been used
in a number of applications (documentation, grammar definitions,
corpus processing, GUI specifications, inter-process communication,
configuration file management, etc...).  It's certainly not the last
word on the subject, but I feel it would be beneficial to have it as a
standard offering with Mozart.

Cheers,

PS: unless someone speaks up against it, I'll probably merge it into
stdlib in a couple of days (and remove the old experimental xml
stuff that was there).

-- 
Dr. Denys Duchier - Équipe Calligramme - LORIA, Nancy, FRANCE