Fixed new style signal connection tests for the proper semantics.

One example to clarify: for the "destroyed(QObject* = 0)" signal,
"obj.destroyed.connect(...)" connects to "destroyed()", and
"obj.destroyed[QObject].connect(...)" connects to "destroyed(QObject*)".

Reviewed by Lauro Moura <lauro.neto@openbossa.org>
Reviewed by Luciano Wolf <luciano.wolf@openbossa.org>

tests/QtGui/qdynamic_signal.py

@@ -1,6 +1,7 @@
 
 import unittest
 
+from PySide.QtCore import QObject
 from PySide.QtGui import QInputDialog
 
 from helper import UsesQApplication
@@ -17,7 +18,7 @@ class DynamicSignalTest(UsesQApplication):
         self.assert_(len(lst))
         obj = lst[0]
         self._called = False
-        obj.destroyed.connect(self.cb)
+        obj.destroyed[QObject].connect(self.cb)
         obj = None
         del dlg
         self.assert_(self._called)