define and handle new other-was-deleted error relay is about to start

returning.

xwords4/android/XWords4/res/values/strings.xml

@@ -311,6 +311,10 @@
     <string name="msg_dup_room">Another host has already registered a room using that name.  Rename yours or retry later.</string>
     <string name="msg_lost_other">The relay has lost contact with another device in this game.</string>
 
+    <string name="msg_dev_deleted">One of the devices in this game has
+      deleted the game. You will not be able to play any
+      further.</string>
+
     <string name="ids_badwords">Word[s] %s not found in dictionary.</string>
     <string name="badwords_accept">  Do you still want to accept this move?</string>
     <string name="badwords_lost">  Turn lost.</string>

xwords4/android/XWords4/src/org/eehouse/android/xw4/CommsTransport.java

@@ -409,6 +409,11 @@ public class CommsTransport extends Thread implements TransportProcs {
             strID = R.string.msg_lost_other;
             break;
 
+        case DELETED:
+            strID = R.string.msg_dev_deleted;
+            how = DIALOG;
+            break;
+
         case OLDFLAGS:
         case BADPROTO:
         case RELAYBUSY:

xwords4/android/XWords4/src/org/eehouse/android/xw4/jni/TransportProcs.java

@@ -47,6 +47,7 @@ public interface TransportProcs {
             ,NO_ROOM
             ,DUP_ROOM
             ,TOO_MANY
+            ,DELETED
     };
     void relayErrorProc( XWRELAY_ERROR relayErr );
 }