removed submodules
Squashed 'third-party/libjpeg/' content from commit bc8f8be

git-subtree-dir: third-party/libjpeg
git-subtree-split: bc8f8be222287fec977ec3f47a5cb065cceb2ee9
Merge commit '4eedbc8625d880d311446f61bc6eb24c9ecb3d7a' as 'third-party/libjpeg'
Squashed 'third-party/libpng/' content from commit c611d7e

git-subtree-dir: third-party/libpng
git-subtree-split: c611d7e912e1e3804d4a338552ca417b89daefbb
Merge commit 'ad69d7fc8a5ef03b17a407febf825408bbcecbef' as 'third-party/libpng'
Adding libpng as subtree has provoked some unexpected modifications...
I don't know why.
Squashed 'third-party/libtiff/' content from commit 3d1889d

git-subtree-dir: third-party/libtiff
git-subtree-split: 3d1889de253c97d696545c5fe141710db1cdabfe
Merge commit 'a8ef7fa90fefa3cf56144720c2a251565b77ae2f' as 'third-party/libtiff'
Occuring modifications just after adding libtiff as subtree.
Squashed 'third-party/zlib/' content from commit edd7aa9

git-subtree-dir: third-party/zlib
git-subtree-split: edd7aa9513b518bfc5b851cdd0e5c16afb6e5801
Merge commit '9a959b4f9293e34361c11cb135f1bfddfcc0de20' as 'third-party/zlib'
Occuring modifications when zlib is added as subtree.