Added it translation. Switched to wepp.

tools/wepp

@@ -0,0 +1,4 @@
+#! /usr/bin/env node
+// -*- js -*-
+
+require("wepp").processArgs(process.argv);

tools/wepp.ant.xml

@@ -0,0 +1,40 @@
+<?xml version="1.0" encoding="utf-8"?>
+<project name="wepp.macros" basedir=".">
+
+    <macrodef name="wepp">
+        <attribute name="file" />
+        <attribute name="toFile" />
+        <attribute name="args" default="" />
+        <sequential>
+            <exec executable="${wepp}">
+                <arg line="@{args}" />
+                <arg value="--in" />
+                <arg value="@{file}" />
+                <arg value="--out" />
+                <arg value="@{toFile}" />
+            </exec>
+        </sequential>
+    </macrodef>
+
+    <macrodef name="wepp.dir">
+        <attribute name="dir" />
+        <attribute name="args" default="" />
+        <sequential>
+            <exec executable="${wepp}">
+                <arg line="@{args}" />
+                <arg value="--inDir" />
+                <arg value="@{dir}" />
+                <arg value="--outDir" />
+                <arg value="@{dir}" />
+            </exec>
+            <delete dir="@{dir}/inc">
+                <fileset
+                    dir="."
+                    includes="@{dir}/**/*.less"
+                    excludes="@{dir}/inc/**,@{dir}/lib/**"
+                />
+            </delete>
+        </sequential>
+    </macrodef>
+
+</project>