Merge spip/tests dans ./tests

tests/tests/Api/AutoriserTest.php

tests/tests/Api/data/autoriser.php

tests/tests/Config/DepotMetaPackTest.php

tests/tests/Config/DepotMetaPersoTest.php

tests/tests/Config/DepotMetaTest.php

tests/tests/Distant/NeedProxyTest.php

tests/tests/Distant/UrlToAsciiTest.php

tests/tests/Distant/ValiderUrlDistanteTest.php

tests/tests/Filtre/AjouterClassTest.php

tests/tests/Filtre/AntispamTest.php

tests/tests/Filtre/AppliquerFiltreTest.php

tests/tests/Filtre/ChercherFiltreTest.php

tests/tests/Filtre/CommuterClassTest.php

tests/tests/Filtre/CorrigerEntitesHtmlTest.php

tests/tests/Filtre/Date/AffdateCourtTest.php

tests/tests/Filtre/Date/AffdateDebutFinTest.php

tests/tests/Filtre/Date/AffdateHeureTest.php

tests/tests/Filtre/Date/AffdateJourcourtTest.php

tests/tests/Filtre/Date/AffdateMoisAnneeTest.php

tests/tests/Filtre/Date/AnneeTest.php