.gitignore: Add tarballs.
.gitignore: Add tarballs.

iseki-masaya/liboping,barak/liboping,iseki-masaya/liboping,barak/liboping,octo/liboping,iseki-masaya/liboping,octo/liboping,iseki-masaya/liboping,barak/liboping,octo/liboping,octo/liboping