MULE-7367: embeded source files along with classes in test jars for clas...

...sloading tests

To help verififcation:
~/Documents/projects/mule(MULE-7367 ✔) jar -tvf modules/launcher/src/test/resources/classloader-test-hello.jar
     0 Wed Apr 16 11:46:30 GMT-03:00 2014 META-INF/
    60 Wed Apr 16 11:46:30 GMT-03:00 2014 META-INF/MANIFEST.MF
     0 Wed Apr 16 11:42:56 GMT-03:00 2014 mypackage/
   364 Tue Apr 15 20:28:10 GMT-03:00 2014 mypackage/MyClass.class
   364 Wed Apr 16 11:44:14 GMT-03:00 2014 mypackage/MyClass.java
~/Documents/projects/mule(MULE-7367 ✔) jar -tvf modules/launcher/src/test/resources/classloader-test-bye.jar
     0 Wed Apr 16 11:48:08 GMT-03:00 2014 META-INF/
    60 Wed Apr 16 11:48:08 GMT-03:00 2014 META-INF/MANIFEST.MF
     0 Tue Apr 15 20:29:50 GMT-03:00 2014 mypackage/
   362 Tue Apr 15 20:29:50 GMT-03:00 2014 mypackage/MyClass.class
   363 Wed Apr 16 11:47:28 GMT-03:00 2014 mypackage/MyClass.java