scala version fixed in OSGi Import-Package

Having several scala in OSGi container may lead to inconsistency if the scala version is not defined in the Manifest.

By the way, I'm wondering on the "com.eaio.util.lang", which is exported and using org.omg.CORBA which is imported but without version information. What about precising the version 3.2 for CORBA and potentially avoid exporting "com.eaio.util.lang" if not required?