So what about XSLT?

An open task in replacing contrib/xml2 is the XSLT support, which the current 
core implementation lacks altogether.  I am known to often be in favor of a 
lean core, so I have so far been hesitant to push this further, but we should 
eventually come up with an implementation for the users' sake.

So where should XSLT functionality live:

- core
- contrib
- pgfoundry

There is also a related but minor question where other interesting XML 
functionality should live, such as pretty-printing and canonicalization.  
These would be relatively straightward passthroughs to functionality provided 
by libxml already.

Comments?