We have plugin.jar in the POM classpath.

build.xml

@@ -23,16 +23,12 @@
     <taskdef resource="org/apache/maven/artifact/ant/antlib.xml"
              uri="urn:maven-artifact-ant" classpath="${maven-ant.jar}"/>
     <artifact:pom id="pom" file="pom.xml"/>
-    <artifact:dependencies pathId="pom-compile.classpath" pomRefId="pom" useScope="compile"/>
+    <artifact:dependencies pathId="compile.classpath" pomRefId="pom" useScope="compile"/>
     <artifact:dependencies pathId="testlibs.classpath" pomRefId="pom" useScope="test"/>
   </target>
 
   <target name="-prepare" depends="-init-maven-ant">
     <mkdir dir="${deploy.dir}"/>
-    <path id="compile.classpath">
-      <path refid="pom-compile.classpath"/>
-      <pathelement location="${java.home}/lib/plugin.jar"/>
-    </path>
     <path id="built.classpath">
       <path refid="compile.classpath"/>
       <pathelement location="${deploy.dir}/classes"/>
@@ -93,7 +89,7 @@
     <javadoc sourcepath="${src.dir}" packagenames="com.threerings.getdown.*"
              windowtitle="${ant.project.name} API" doctitle="${ant.project.name} API"
              overview="${src.dir}/com/threerings/getdown/overview.html"
-             bottom="Copyright &#169; 2010 Three Rings Design, Inc. All Rights Reserved."
+             bottom="Copyright &#169; 2004-2011 Three Rings Design, Inc. All Rights Reserved."
              destdir="${deploy.dir}/docs">
       <classpath refid="compile.classpath"/>
       <link href="http://java.sun.com/j2se/1.5/docs/api/"/>
@@ -130,7 +126,7 @@
       <outjar path="${deploy.dir}/${ant.project.name}.jar"/>
       <libraryjar name="${rt.jar}"/>
       <libraryjar name="${org.apache.ant:ant:jar}"/>
-      <libraryjar name="${java.home}/lib/plugin.jar"/>
+      <libraryjar name="${java:plugin:jar}"/>
 
       <!-- keep the whole nine yards, just trim/obfuscate our depends -->
       <keep name="com.threerings.getdown.**">