[php-PHP-CSS-Parser/f21] - update to 6.0.0 + fix for PHP 5.3 - add provides php-composer(sabberworm/php-css-parser)

[Remi Collet]

Summary of changes:

  45df96c... - update to 6.0.0 + fix for PHP 5.3 - add provides php-comp (*)

(*) This commit already existed in another branch; no separate mail sent