[xml] Canonical XML Implementation

[Aleksey Sanin <aleksey aleksey com>]

Daniel,

Please find attached the implementation of C14N and Exc-C14N standards
("Canonical XML version 1.0" http://www.w3.org/TR/xml-c14n  and
"Exclusive XML Canonicalization version 1.0" 
http://www.w3.org/TR/xml-exc-c14n).
It'll be great if you'll be able to include this into libxml2 library as 
we discussed.

I also created a separate xmlc14n library package for anyone who wants  to
look at this ASAP:
       http://www.aleksey.com/xmlc14n/xmlc14n.20020303_011819.tar.gz
this package also includes test program and test cases from 
"Interoperability
Reports" for both standards.

With best regards,

Aleksey.