Initial commit
Add the files from Linux 3.13-rc4

  - .gitignore
  - Makefile
  - scripts/
Enable app build

  $ make mrproper
  $ make menuconfig
  $ make
  $ make clean
  # make distclean
Fix to change application image name

If you want to change application image name, set the KBUILD_IMAGE
environment. Default KBUILD_IMAGE is 'app'.

NOTICE! Be careful to add image file in git repository.