I tried to upload a theme to wordpress.org but it told me:
WARNING: could not find the file comments.php in the theme.
REQUIRED: This theme doesn't seem to support the standard avatar functions. Use get_avatar or wp_list_comments to add this support.
And I just found a domain parking theme LaunchPad http://wordpress.org/extend/themes/launchpad, which doesn't have comments.php, wp_head and wp_footer and etc.. It only has a index.php, a functions.php, some images and style files.
Please tell me how to upload a theme like LaunchPad.