Adjust settings on theme activation - Add to all new themes

add_action( 'after_setup_theme', 'the_theme_setup' );
function the_theme_setup()
{
	// First we check to see if our default theme settings have been applied.
	$the_theme_status = get_option( 'theme_setup_status' );
	// If the theme has not yet been used we want to run our default settings.
	if ( $the_theme_status !== '1' ) {
		// Setup Default WordPress settings
		$core_settings = array(
			'avatar_default'				=> 'mystery',					// Comment Avatars should be using mystery by default
			'avatar_rating'					=> 'G',							// Avatar rating
			'comment_max_links'				=> 0,							// We do not allow links from comments
			'comments_per_page'				=> 20							// Default to 20 comments per page
		);
		foreach ( $core_settings as $k => $v ) {
			update_option( $k, $v );
		}
		// Delete dummy post, page and comment.
		wp_delete_post( 1, true );
		wp_delete_post( 2, true );
		wp_delete_comment( 1 );
		// Once done, we register our setting to make sure we don't duplicate everytime we activate.
		update_option( 'theme_setup_status', '1' );
		// Lets let the admin know whats going on.
		$msg = '
		<div class="error">
			<p>The ' . get_option( 'current_theme' ) . 'theme has changed your WordPress default <a href="' . admin_url() . 'options-general.php" title="See Settings">settings</a> and deleted default posts & comments.</p>
		</div>';
		add_action( 'admin_notices', $c = create_function( '', 'echo "' . addcslashes( $msg, '"' ) . '";' ) );
	}
	// Else if we are re-activing the theme
	elseif ( $the_theme_status === '1' and isset( $_GET['activated'] ) ) {
		$msg = '
		<div class="updated">
			<p>The ' . get_option( 'current_theme' ) . ' theme was successfully re-activated.</p>
		</div>';
		add_action( 'admin_notices', $c = create_function( '', 'echo "' . addcslashes( $msg, '"' ) . '";' ) );
	}
}