make minimized windows first of minimized

instead of last, causingding to  general LIFO

REVIEW: 110567

client.cpp

@@ -880,7 +880,7 @@ void Client::minimize(bool avoid_animation)
     updateAllowedActions();
     workspace()->updateMinimizedOfTransients(this);
     updateWindowRules(Rules::Minimize);
-    FocusChain::self()->update(this, FocusChain::MakeLast);
+    FocusChain::self()->update(this, FocusChain::MakeFirstMinimized);
     // TODO: merge signal with s_minimized
     emit clientMinimized(this, !avoid_animation);
 

focuschain.cpp

@@ -235,7 +235,17 @@ Client *FocusChain::nextForDesktop(Client *reference, uint desktop) const
 void FocusChain::makeFirstInChain(Client *client, QList< Client * >& chain)
 {
     chain.removeAll(client);
-    chain.append(client);
+    if (client->isMinimized()) { // add it before the first minimized ...
+        for (int i = chain.count()-1; i >= 0; --i) {
+            if (chain.at(i)->isMinimized()) {
+                chain.insert(i+1, client);
+                return;
+            }
+        }
+        chain.prepend(client); // ... or at end of chain
+    } else {
+        chain.append(client);
+    }
 }
 
 void FocusChain::makeLastInChain(Client *client, QList< Client * >& chain)

focuschain.h

@@ -52,7 +52,8 @@ public:
     enum Change {
         MakeFirst,
         MakeLast,
-        Update
+        Update,
+        MakeFirstMinimized = MakeFirst
     };
     virtual ~FocusChain();
     /**