XOM API for Processing XML with Java

[Wolfgang Hoschek <whoschek AT lbl.gov>]

Small suggestion ("fruit hanging low"):

12% speedup in ParentNode.java for changing the static declaration of 
childen from a List to an ArrayList (which it is anyway):
ParentNode.java:

    ArrayList   children;
    //List   children;


10% speedup for moving Attributes.ArrayList into Element, which makes 
access faster, plus saves a little memory
(keeping static accessor methods in class Attributes, and adding an 
"ArrayList" parameter for the attributes)

Element.java:
//    private Attributes attributes = null;
    private ArrayList attributes = null;

Semantics remain unchanged by this.

With those patches applied bnux deserialization from CVS now yields:
weblog.xml: 40 MB/s
wurfl.xml: 55 MB/s
factbook.xml: 82 MB/s
soap.xml: 30 MB/s

The profiler traces for each of those are too large to attach. Contact 
me directly if you're interested.