File _service of Package hello

<services>
	<service name="tar_scm">
		<param name="url">git://github.com/sleep-walker/hello-world</param>
		<param name="scm">git</param>
		<param name="filename">hello</param>
		<param name="versionformat">0.0.%cd</param>
	</service>
	<service name="recompress">
		<param name="file">*.tar</param>
		<param name="compression">xz</param>
	</service>
	<service name="set_version"/>
</services>