Security bugfix release: All users are encouraged to upgrade to this version as soon as possible.

Changelog: - removed code compatibility for PHP <5.4 (lots of code + ifdefs) - allow https location for suhosin.filter.action - fixed newline detection for suhosin.mail.protect - Added suhosin.upload.max_newlines to protect againt DOS attack via many MIME headers in RFC1867 uploads (CVE-2015-4024) - mail related test cases now work on linux