rename busy state in busy (DND) + volatile contacts are now subscribed as any other contact

src/net/java/sip/communicator/impl/protocol/sip/OperationSetPresenceSipImpl.java

@@ -3249,10 +3249,6 @@ public ContactSipImpl createVolatileContact(String contactAddress)
         ContactSipImpl newVolatileContact
             = new ContactSipImpl(contactAddress, this.parentProvider);
         newVolatileContact.setPersistent(false);
-        
-        // ensure that we won't try to subscribe to him
-        newVolatileContact.setResolvable(false);
-        newVolatileContact.setResolved(true);
 
         // Check whether a volatile group already exists and if not create one
         ContactGroupSipImpl theVolatileGroup = getNonPersistentGroup();

src/net/java/sip/communicator/impl/protocol/sip/SipStatusEnum.java

@@ -40,7 +40,7 @@ public class SipStatusEnum
     public static final SipStatusEnum BUSY
         = new SipStatusEnum(
             30,
-            "Busy",
+            "Busy (DND)",
             loadIcon("resources/images/sip/sip16x16-busy.png"));
     
     /**