Replaced our local copy of jzlib with a clean jar built from jzlib 1.0.7

downloaded from jcraft: http://www.jcraft.com/jzlib/jzlib-1.0.7.tar.gz

Built using the following build.xml (since jzlib doesn't include one)

<project>
    <target name="clean">
        <delete dir="build"/>
    </target>
    <target name="compile">
        <mkdir dir="build/classes"/>
        <javac srcdir="com" destdir="build/classes"/>
    </target>
    <target name="jar">
        <mkdir dir="build/jar"/>
        <jar destfile="build/jar/jzlib.jar" basedir="build/classes"></jar>
    </target>
</project>