Run a benchmark with measureMemory sorted

gistfile1.xml

<target name="benchmark-utf8-encoding" depends="build,download-allocation-jar" description=" run experiments">
  	<ivy:cachepath pathid="lib.path.id" />
	<java classpathref="lib.path.id" classname="utf8.Utf8EncodingBenchmark" fork="true">
		<classpath>
			<pathelement path="${build.dir}"/>
			<pathelement location="${allocation.jar.file}"/>
		</classpath>
		<env key="ALLOCATION_JAR" value="${allocation.jar.file}"/>
		<arg value="--measureMemory" />
	</java>
</target>