Squashed 'tools/gyp/' content from commit e4d3e89

git-subtree-dir: tools/gyp
git-subtree-split: e4d3e893b4acad38f3cc90d444afcd081ba14aac
Merge commit '895cf2eee5bdb42a67d06dd55a13a3b868499445' as 'tools/gyp'
Remove unneccesary .gitkeept from tools.