rm *.d in clean rule
modified:   kernel_loader/protected_code.c
    in real pc (eeepc 901) big real mode address
      is different from qemu/bochs, REAL_PC macro use for real pc.

    p_dump_memory() for debugging.
modified:   kernel_loader/kernel_loader.c
    use dump_memory() for debugging.
modified:   kernel_loader/kloader_init.S
    add disp_XX, dump_memory serial debugging function.