Create PySideWeakRef class.

With this class you can use a c function as a callback on PyObject destruction.

Reviewer: Marcelo Lira <marcelo.lira@openbossa.org>
          Hugo Parente Lima <hugo.pl@gmail.com>

libpyside/pysideweakref.h

@@ -0,0 +1,17 @@
+#ifndef __PYSIDEWEAKREF__
+#define __PYSIDEWEAKREF__
+
+#include <pysidemacros.h>
+#include <Python.h>
+
+typedef void (*PySideWeakRefFunction)(void* userData);
+
+namespace PySide { namespace WeakRef {
+
+PYSIDE_API PyObject* create(PyObject* ob, PySideWeakRefFunction func, void* userData);
+
+} //PySide
+} //WeakRef
+
+
+#endif