New version (1.2.49 cssu2) of libpng12-0 is in the repo, it backports neon patches from libpng15 upstream and also add memory 16-bit alignment (both thanks to freemangordon). It speeds up the png loading ~30% (sure it depends on png file).

New version (2.6.32 cssu1) of libxml2 is in the repo, it backports fix for using zlib the supported way.