Fix bad ConstFunctionIntr inheritance declaration.
Fix bad ConstFunctionIntr inheritance declaration.

pbrunet/pythran,pombredanne/pythran,artas360/pythran,pbrunet/pythran,hainm/pythran,hainm/pythran,hainm/pythran,pombredanne/pythran,serge-sans-paille/pythran,pombredanne/pythran,artas360/pythran,serge-sans-paille/pythran,artas360/pythran,pbrunet/pythran