update native header

Author: latot

inst/private/python_ipc_native.m

@@ -65,6 +65,8 @@
                     'import sympy as sp'
                     'from sympy import __version__ as spver'
                     'from sympy import *'
+                    'from sympy.sets.fancysets import *'
+                    'from sympy.sets.sets import *'
                     'from sympy.logic.boolalg import Boolean, BooleanFunction'
                     'from sympy.core.relational import Relational'
                     '# temporary? for piecewise support'