- new function in WINGs: WMSetConnectionShutdownOnClose()

- new callback in the ConnectionDelegate structure: canResumeSending
- replaced setpgid() with setsid() when starting kids, to allow them to
  survive if wmaker (the parent) dies.
- a few cleanups.

WINGs/Examples/server.c

@@ -42,6 +42,7 @@ static WMConnection *serverPtr = NULL;
 
 static ConnectionDelegate socketDelegate = {
     NULL,                 /* client data */
+    NULL,                 /* canResumeSending */
     NULL,                 /* didCatchException */
     connectionDidDie,     /* didDie */
     NULL,                 /* didInitialize */