Squashed 'C-Genetics/' content from commit e68cc20

git-subtree-dir: C-Genetics
git-subtree-split: e68cc200c0651510a26e817ee909c2152e0ea35d
Merge commit 'bf0ec55e8de2ad1e1677183c9f2b401d20233537' as 'C-Genetics'
Removed libpng source, switched to C-Genetics subtree format