Cannot compile code from CVS

Hi, I checked out eXist from CVS, and when the ant script is run I get
the following errors:

      [javac] 
/home/gpothier/eclipse/workbench-3.1M1/eXist-1.0/src/org/exist/dom/NodeImpl.java:46:
org.exist.dom.NodeImpl is not abstract and does not override abstract
method getUserData(java.lang.String) in org.w3c.dom.Node
       [javac] public class NodeImpl implements Node, QNameable {
       [javac]        ^
       [javac] 
/home/gpothier/eclipse/workbench-3.1M1/eXist-1.0/src/org/exist/dom/DocumentImpl.java:63:
org.exist.dom.DocumentImpl is not abstract and does not override
abstract method
renameNode(org.w3c.dom.Node,java.lang.String,java.lang.String) in
org.w3c.dom.Document
       [javac] public class DocumentImpl extends NodeImpl implements
Document, Comparable {
       [javac]        ^
       [javac] 
/home/gpothier/eclipse/workbench-3.1M1/eXist-1.0/src/org/exist/memtree/NodeImpl.java:51:
org.exist.memtree.NodeImpl is not abstract and does not override
abstract method getUserData(java.lang.String) in org.w3c.dom.Node
       [javac] public class NodeImpl implements Node, NodeValue, QNameable {
       [javac]        ^
       [javac] 
/home/gpothier/eclipse/workbench-3.1M1/eXist-1.0/src/org/exist/dom/CharacterDataImpl.java:34:
org.exist.dom.CharacterDataImpl is not abstract and does not override
abstract method getUserData(java.lang.String) in org.w3c.dom.Node
       [javac] public class CharacterDataImpl extends NodeImpl
implements CharacterData {
       [javac]        ^
       [javac] 
/home/gpothier/eclipse/workbench-3.1M1/eXist-1.0/src/org/exist/dom/TextImpl.java:39:
org.exist.dom.TextImpl is not abstract and does not override abstract
method replaceWholeText(java.lang.String) in org.w3c.dom.Text
       [javac] public class TextImpl extends CharacterDataImpl implements Text {

(...) and a few more of the same style.
I am building with jdk 1.5, so I added the source="1.4" flag to the
javac task so that the compiler doesn't complain about "enum" used as
identifier.

DId I miss something, or is the CVS currently not buildable?
I am looking at this because I would like to try to fix the issue with
computed node constructors (1015954)
Guillaume


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