Specification-Injection

This tools is a very simple tools to inject a 'specification' field in java interface. 
This field is used by iPOJO to describe service specification and more precisely
specification-level service dependencies.The syntax used to describe those specifications
is a little complex (to improve parsing time at runtime). So this tools aims to provide
a way to describe those specifications in an XML file that will be translate and injected 
in the java file. 

This tools is quite simple to use:
java -jar specification.injection.jar $PATH_TO_THE_JAVA_INTERFACE $PATH_TO_THE_XML_FILE

such as:
java -jar specification.injection test/org/apache/felix/ipojo/test/Foo.java test/spec.xml

where Foo.java is a java interface, and spec.xml is an xml file describing service dependencies such as:
<specification>
 	<requires specification="org.apache.felix.ipojo.test.composite.service.Toto"
 	    optional="true" aggregate="true" type="service"
 	    />
 </specification> 

TODO List:
- do not reinject an already injected field
- provide a dump mode just dumping the field declaration