android打包工具make_ext4fs，支持android8.0打包(Linux版)

make_ext4fs用于Android平台上制作ext4文件系统的镜像。 make_ext4fs [ -l <len> ] [ -j <journal size> ] [ -b <block_size> ] [ -g <blocks per group> ] [ -i <inodes> ] [ -I <inode size> ] [ -L <label> ] [ -f ] [ -a <android mountpoint> ] [ -S file_contexts ] [ -C fs_config ] [ -T timestamp ] [ -z | -s ] [ -w ] [ -c ] [ -J ] [ -v ] [ -B <block_list_file> ] <filename> [<directory>]