Squashed 'libft/' changes from 2a009b1..ed2ef69

ed2ef69 t_big + draw transparency
ab69279 Fix segfault
9bac1af Optimise get_next_line and fix bug with folder
a1bb058 ft_hidenp

git-subtree-dir: libft
git-subtree-split: ed2ef6994f4a214c659efd2a070c322441ec2fcd
Update libft
Update to libft