Fix: A little clean of dol_hash usage.

htdocs/core/class/CMailFile.class.php

htdocs/core/class/html.form.class.php

htdocs/core/class/rssparser.class.php

htdocs/core/class/smtps.class.php

htdocs/core/lib/security.lib.php

htdocs/core/lib/security2.lib.php

htdocs/user/class/user.class.php

htdocs/user/passwordforgotten.php

test/phpunit/SecurityTest.php