Use the right way to handle the none_present page and the swaped out page

Use the right way to handle the none_present page and the swaped out page

In kernel 2.6.56.6, we can just call handle_pte_fault, it can handle it
correctly(at least for now). While, you should omit the 'static' statement
in mm/memory.c to let the Kbuild dump the handle_pte_fault symbol out for
the compiling.

Signed-off-by: Yuanhan Liu <Aleaxander@gmail.com>