This fixes the following CVEs:
- in BCMath: CVE-2016-4537, CVE-2016-4538
- in EXIF: CVE-2016-4542, CVE-2016-4543, CVE-2016-4544
- in GD: CVE-2016-3074
- in Intl: CVE-2016-4540, CVE-2016-4541
- in XML: CVE-2016-4539
Signed-off-by: Michael Heimpold <mhei@heimpold.de>