Add a delay mode where getdown will wait a specified number of minutes before doing any downloading. This will be useful if, say, getdown is invoked from someone else's installer and we don't want to monopolize network resources immediately. Enabled with -Ddelay=<minutes>

src/java/com/threerings/getdown/launcher/Getdown.java

@@ -88,6 +88,7 @@ public abstract class Getdown extends Thread
     {
         super("Getdown");
         _silent = Boolean.getBoolean("silent");
+        _delay = Integer.getInteger("delay", 0);
         try {
             _msgs = ResourceBundle.getBundle("com.threerings.getdown.messages");
         } catch (Exception e) {
@@ -348,6 +349,16 @@ public abstract class Getdown extends Thread
                 createInterface(true);
             }
 
+            if (_delay > 0) {
+                try {
+                    Log.info("Waiting " + _delay + " minutes before beginning actual work");
+                    Thread.sleep(_delay * 60 * 1000);
+                } catch (InterruptedException ie) {
+                    Log.warning("Who dares disturb my slumber?");
+                    Log.logStackTrace(ie);
+                }
+            }
+
             // we create this tracking counter here so that we properly note the first time through
             // the update process whether we previously had validated resources (which means this
             // is not a first time install); we may, in the course of updating, wipe out our
@@ -918,6 +929,9 @@ public abstract class Getdown extends Thread
 
     protected boolean _enableTracking = true;
     protected int _reportedProgress = 0;
+    
+    /** Number of minutes to wait after startup before beginning any real heavy lifting. */
+    protected int _delay;
 
     /** The maximum number of resources that can be already present for bittorrent to be used. */
     protected static final int MAX_TORRENT_VERIFIED_RESOURCES = 1;