Fixed a bug where vipzone flags were defined not only in include/linux/vipzone_flags.h, but also in include/asm-generic/mman.h. Now, they are only defined in include/linux/vipzone_flags.h.
Changed include/linux/vipzone_flags.h to include/linux/vip_flags.h to be consistent with nomenclature. Cleaned it up a little as well.