rename subsystem to component.

[utils] / system / general / src / main / java / org / wamblee / system / ServiceRegistry.java

package org.wamblee.system;

public interface ServiceRegistry {

        Service register(ProvidedInterfaceDescriptor aDescriptor, Object aService);
        
        void remove(Service aService); 
        
        Service find(String aId); 
        
        Service[] listAllServices(); 
}