Fixed QApplication exit order.

SignalManager need be destroyed before QApplication to avoid memory
leak.

Reviewer: Hugo Parente Lima <hugo.lima@openbossa.org>,
          Luciano Wolf <luciano.wolf@openbossa.org>

PySide/QtGui/glue/qapplication_init.cpp

@@ -6,6 +6,8 @@ static char** QApplicationArgValues;
 
 void DeleteQApplicationAtExit() {
     if (QApplication::instance()) {
+        //disconnect and decref all widgets used on signals before destroy qApp
+        PySide::SignalManager::instance().clear();
         delete QApplication::instance();
         for (int i = 0; i < QApplicationArgCount; ++i)
             delete[] QApplicationArgValues[i];

libpyside/globalreceiver.cpp

@@ -247,10 +247,12 @@ int GlobalReceiver::qt_metacall(QMetaObject::Call call, int id, void** args)
         retval = PyObject_CallObject(callback, preparedArgs);
     }
 
-    if (!retval)
+    if (!retval) {
-        qWarning() << "Error calling slot" << m_metaObject.method(id).signature();
+        qDebug() << "Error calling slot" << m_metaObject.method(id).signature();
-    else
+        PyErr_Print();
+    } else {
         Py_DECREF(retval);
+    }
 
     return -1;
 }

libpyside/signalmanager.cpp

@@ -221,6 +221,12 @@ SignalManager::SignalManager() : m_d(new SignalManagerPrivate)
     TypeResolver::createValueTypeResolver<ushort>("ushort");
 }
 
+void SignalManager::clear()
+{
+    delete m_d;
+    m_d = new SignalManagerPrivate();
+}
+
 SignalManager::~SignalManager()
 {
     delete m_d;

libpyside/signalmanager.h

@@ -69,6 +69,9 @@ public:
 
     // Used to discovery if SignalManager was connected with object "destroyed()" signal.
     bool hasConnectionWith(const QObject *object);
+
+    // Disconnect all signals managed by Globalreceiver
+    void clear();
 private:
     struct SignalManagerPrivate;
     SignalManagerPrivate* m_d;