Re-add the possibility to run tests by module.

tests/QtGui/x11_symbols_test.py

@@ -0,0 +1,17 @@
+
+''' Test the presence of X11 symbols in QtGui'''
+
+import unittest
+
+from PySide.QtGui import QPixmap
+
+class X11Test(unittest.TestCase):
+
+    def test(self):
+        self.assert_('handle' in dir(QPixmap))
+        self.assert_('x11Info' in dir(QPixmap))
+        self.assert_('x11PictureHandle' in dir(QPixmap))
+        self.assert_('x11SetDefaultScreen' in dir(QPixmap))
+
+if __name__ == '__main__':
+    unittest.main()