Squashed 'libraries/glm/' content from commit 4fa38c7

git-subtree-dir: libraries/glm
git-subtree-split: 4fa38c7a03df4064f9c4fff75f9d5a93f0049ae5
Merge commit '515ed4d84ee3fa566d7a9eda9759f147d6900fa7' as 'libraries/glm'
Squashed 'libraries/glfw/' content from commit e4d3f86

git-subtree-dir: libraries/glfw
git-subtree-split: e4d3f860977baa314f022d7db5ed3420389ba372
Merge commit '84b194747fbc63d68e44d992d170085ae1343907' as 'libraries/glfw'
Squashed 'libraries/gli/' content from commit 93c0c44

git-subtree-dir: libraries/gli
git-subtree-split: 93c0c449dab34039800d00dd7e36aba98fa59b49
Merge commit '91a3a4efa0a5255e27f33d7633748199105d6c63' as 'libraries/gli'
Remove rsd in tld.
Squashed 'libraries/rsd/' content from commit 33f2637

git-subtree-dir: libraries/rsd
git-subtree-split: 33f263774afa563274f1564f266a9ca51c56ba58
Merge commit '108f11c335d3666e5b0bedd8d19531800beadbc4' as 'libraries/rsd'
Fix up CMakeLists.txt after moving libraries to libraries subdirectory.