Move xml.sax.saxutils.*?

[chris.atlee at gmail.com]

It seems like functions such as xml.sax.saxutils.escape and unescape
are generally useful, and not at all tied to the xml.sax module.  Would
it make sense to move them somewhere else, like to xml?

I ask because it just took me 20 minutes to figure out how to escape
entities in python.  It's not obvious that this functionality should be
buried 3 modules deep.

Cheers,
Chris