Changing the command's shortcut updates its internal actions.

If the command's shortcut is changed all context actions are updated
accordingly. When the new context action is added its shortcut is
automatically updated (taken from command's shortcut).

Reviewed-by: con
Task-number: QTCREATORBUG-471

src/plugins/coreplugin/actionmanager/command.cpp

@@ -500,6 +500,7 @@ void OverrideableAction::addOverrideAction(QAction *action, const QList<int> &co
             m_contextActionMap.insert(k, action);
         }
     }
+    action->setShortcut(OverrideableAction::action()->shortcut());
 }
 
 void OverrideableAction::actionChanged()
@@ -529,3 +530,14 @@ bool OverrideableAction::isActive() const
 {
     return m_active;
 }
+
+void OverrideableAction::setKeySequence(const QKeySequence &key)
+{
+    QMap<int, QPointer<QAction> >::const_iterator it = m_contextActionMap.constBegin();
+    QMap<int, QPointer<QAction> >::const_iterator itEnd = m_contextActionMap.constEnd();
+    while (it != itEnd) {
+        it.value()->setShortcut(key);
+        ++it;
+    }
+    Action::setKeySequence(key);
+}

src/plugins/coreplugin/actionmanager/command_p.h

@@ -143,6 +143,7 @@ public:
     bool setCurrentContext(const QList<int> &context);
     void addOverrideAction(QAction *action, const QList<int> &context);
     bool isActive() const;
+    void setKeySequence(const QKeySequence &key);
 
 private slots:
     void actionChanged();