[Mono-docs-list] valdoc.exe: documentation validator

[Per Arneng]

Hi!

CVS:ed up a little class document validator. The validator uses the Relax ng 
validating  XmlReader by Atsushi Enomoto. The relax ng schema file is 
compiled in to the exe file and could easily be changed if the doc specs 
changes. It "should" be ecma cli doc compatible :)

location:
   monodoc/doctools/valdoc

example:
   make
   valdoc ../../class/corlib/en/System.IO/TextReader.xml

Best regards
   Per Arneng