[Sandler-develop] Sandler Serialization

[Brian M. <br...@ap...>]

I spent some time playing with Mark's new serialization system and have 
a few thoughts =)

I changed IOException to a Sandler defined SerializationException -- 
most of the time no exception is actually thrown.

I have started work also on a SAX serializer (add ContentHandler 
instances to receive callbacks when serialization is done). In that 
vein -- does anyone mind if I add Xerces as a test-time dependency?

-Brian