Import upstream 1.0.3 from liboauth-1.0.3.tar.gz
cleanup old packaging
Add 'liboauth/' from commit '1ceff59dcc030b8822d39764b69b60ebccf63c9e'

git-subtree-dir: liboauth
git-subtree-mainline: 853a5c7edb1fc3362d254a1f18b3d84dcafd8e32
git-subtree-split: 1ceff59dcc030b8822d39764b69b60ebccf63c9e
[packaging] subtree style packaging for new version 1.0.3