Squashed 'sglib/' changes from 1ffeb30..0ec7b66

0ec7b66 Deleted testing subdirectory

git-subtree-dir: sglib
git-subtree-split: 0ec7b66ac9101f952c3b2d16c396450714fed02c
Merge commit '7e584041601bd8b82b6b699f9ba7fd5eb93d77a8'