Exppython:

- Fixed a problem with control of the global Python dictionary persistence:
    Blender.ReleaseGlobalDict(bool) should now work fine.
- Trying to fix the sigsegv crashes on Windows:
    They happen when we try to "print" our objects, like Lamps or Cameras.
    Following advice from the Python Embedding doc, removed the tp_print
    method from Camera and also improved its tp_repr one, that will be used
    as print, repr() and str() for Cameras.  If this test works all other objs
    will be updated accordingly.

source/blender/python/api2_2x/Camera.h

@@ -174,7 +174,7 @@ static PyMethodDef BPy_Camera_methods[] = {
 /* Python Camera_Type callback function prototypes:                          */
 /*****************************************************************************/
 static void Camera_dealloc (BPy_Camera *self);
-static int Camera_print (BPy_Camera *self, FILE *fp, int flags);
+//static int Camera_print (BPy_Camera *self, FILE *fp, int flags);
 static int Camera_setAttr (BPy_Camera *self, char *name, PyObject *v);
 static int Camera_compare (BPy_Camera *a, BPy_Camera *b);
 static PyObject *Camera_getAttr (BPy_Camera *self, char *name);