ChangeLog, link.c, mkdir.c, newdir.c:

ChangeLog, link.c, mkdir.c, newdir.c:
  mkdir.c (ext2fs_mkdir): Pass EXT2_FT_DIR flag to ext2fs_link().
  link.c (ext2fs_link): This call now uses the low three bits of the
  	flags parameter to pass the directory filetype information; it will
  	set the directory entry FILETYPE information if the filesystem
  	supports it.
  newdir.c (ext2fs_new_dir_block): If the FILETYPE superblock option is
  	set, then create the '.' and '..' entries with the filetype set to
  	EXT2_FT_DIR.